NITP 17.1
National Instrument Test
Procedures for Density
Hydrometers
Part 1: Brix Hydrometers for Cane Juice
© Commonwealth of Australia 2015
NITP 17.1
First edition (final draft) — v1, Dec 2015
National Measurement Institute
Bradfield Road, Lindfield, NSW 2070
PO Box 264, Lindfield, NSW 2070
T
F
W
(61 2) 8467 3600
(61 2) 8467 3610
www.measurement.gov.au
Amendments
Item no.
Date
Page
Location
Details of change
Preface
NMI’s Chief Metrologist has determined that NITP 17.1 contains the test procedures for the
verification of density hydrometers. Part 1 specifically addresses Brix hydrometers used to estimate
sucrose concentration in a test sample on the basis of its density.
ii
Contents
Amendments ........................................................................................................................................ ii
Preface .................................................................................................................................................. ii
Explanation of Terms.......................................................................................................................... iv
Abbreviations ...................................................................................................................................... iv
1
Scope .......................................................................................................................................... 1
2
Equipment................................................................................................................................... 1
3
Visual Inspection ....................................................................................................................... 2
4
5
3.1
Required Data.................................................................................................................... 2
3.2
Characteristics of the Instrument ....................................................................................... 3
Test Procedures ......................................................................................................................... 3
4.1
Method 1: Verification of a hydrometer calibrated by a Verifying Authority....................... 4
4.2
Method 2: Comparison against a reference standard in sucrose solution ........................ 4
4.3
Method 3: Comparison against a reference standard in another test liquid ...................... 6
Suggested sequence for testing .............................................................................................. 6
5.1
General .............................................................................................................................. 6
5.2
Multiple hydrometers tested simultaneously ..................................................................... 6
Test Report (Mandatory) .......................................................................................... 8
Additional guidance for some equipment (Mandatory)...................................... 15
Standard procedures (Mandatory) ....................................................................... 17
Corrections for brix hydrometer readings outside the reference temperature
(Mandatory) ............................................................................................................ 19
Tables of mass % solute and density at 20° C for aqueous test liquids
(Informative) ........................................................................................................... 24
Meniscus correction (Informative) ....................................................................... 25
iii
Explanation of Terms
For explanations of terms see General Information for Test Procedures. For other terms relating to
hydrometers, refer to NMI General Certificate of Approval (CoA) NMI 17/1/0.
Correction
Compensation for an estimated systematic effect, e.g. the temperature of a sample affects its density
and therefore the observed brix value.
Observed brix reading; observed brix
The value read from a brix hydrometer at the recorded ambient temperature.
Observed temperature
The value read from a liquid-in-glass thermometer or the value indicated by a digital device.
Temperature; scaled-corrected temperature
The true temperature, i.e. the observed temperature with the appropriate scale correction applied.
Temperature-corrected brix
The observed brix reading corrected to 20.0 °C.
True brix; scale and temperature-corrected brix
The temperature-corrected brix value with the appropriate scale correction applied.
Abbreviations
BSES Bureau of Sugar Experimental Stations
CoA
Certificate of Approval
°Bx
Degrees Brix
MPE
Maximum Permissible Error
MC
Meniscus correction
NATA National Association of Testing Authorities
iv
1. Scope
NITP 17.1 describes the test procedures for the verification and in-service inspection of density
hydrometers to assess that they measure within the maximum permissible errors (MPEs) and that
they comply with the General Certificate of Approval (CoA) NMI 17/1/0.
The MPE for measurements using a Brix hydrometer is stated in Variant 1 of CoA NMI 17/1/0. The
tests in NITP 17.1 Part 1 are specific to Brix hydrometers that are used to estimate the sucrose
concentration in a test sample on the basis of its density.
The safety and environmental hazards associated with carrying out the test procedure will depend on
the location and selected materials. As the precautionary measures included in this document may
not be sufficient for every situation, it is expected that an on-site risk assessment and control plan will
be carried out before commencing work.
All instruments must also comply with the National Measurement Act 1960 (Cth), the National
Measurement Regulations 1999 (Cth) and the National Trade Measurement Regulations 2009 (Cth).
2. Equipment
Refer to Appendix B for additional guidance on selected equipment.
1. Test Report (see Appendix A for example).
2. General CoA NMI 17/1/0
3. For each hydrometer submitted for verification using method 1:
A NATA-endorsed calibration report from a NMI-appointed Verifying Authority indicating the
corrections for at least three points over the hydrometer scale.
The following items apply to method 2 and method 3 only:
4. Reference standard hydrometer that meets the following requirements:
(a) Valid Regulation 13 (Reg 13) certificate from a NMI-appointed Verifying Authority.
(b) Not used in routine measurements.
(c) Same scale range as the hydrometer under test.
(d) Same or smaller scale graduation interval as the hydrometer under test.
(e) Calibration report with scale corrections for at least six points.
For reference Brix hydrometers, 0.02 °Bx is the maximum measurement uncertainty.
(f) Stored in protective environments to prevent noticeable damage (e.g. scratches, etching,
scale slippage, deposits on the glass and discolouration) that will require re-calibration of the
reference hydrometer.
5. Thermometer that meets the following requirements:
(a) Scale range suitable for measuring the ambient and test liquid temperature.
(b) Valid Reg 13 certificate or a NATA calibration report (uncertainty ≤ 0.2 °C).
Refer to clause B.1 regarding instances where the reported thermometer scales corrections
are taken as negligible.
(c) Scale interval for liquid-in-glass or digital device ≤ 0.1 °C.
6. Comparator jar that meets the following requirements:
(a) Any markings on the jar shall not interfere with obtaining accurate readings.
NITP 17.1, v1
Page 1 of 25
(b) Sufficient depth so that the hydrometers can float freely at least 25 mm above the bottom.
(c) The other dimensions shall be large enough to contain at least two hydrometers while
maintaining at least 12.5 mm between the inner wall of the jar and any immersed hydrometer,
and at least 12.5 mm between hydrometers.
Note:
The in-house procedure shall state the maximum number of hydrometers of a
particular size that can fit in the comparator jar.
7. Equipment for preparing test liquids of varying concentrations and densities: laboratory balance,
volumetric flasks, graduated cylinders, pipettes.
8. Appropriate test liquids that are clear, colourless and have high surface tension (75 mN/m), which
is similar to the value at which the reference hydrometer is calibrated. The brix values shall
correspond with the test points on the submitted hydrometer.

For method 2: Aqueous sucrose solutions

For method 3: Aqueous solutions based on another substance described in Table 1. Refer to
clause 4.3 for restrictions on the use of these substances.
9. Stirrer, i.e. an annular ring of glass or metal with a handle of sufficient length so that it can be
conveniently moved up and down when stirring the liquid.
10. Background screen which is a screen slightly wider than the width of the comparator jar (black
upper half and white lower half) and can assist in keeping the correct line of sight.
11. Cleaning equipment, i.e. soapy water, absolute alcohol (99%), lint-free cloth or tissue paper.
Table 1. Maximum brix level attainable with test liquids at 20 °C
Solute conc.
(wt %)
Density
(kg/m3)
Approx brix
(°Bx)
0
998.203
0
Sucrose (e.g. pure or refined sugar)
67*
1328.81
67
Sodium chloride, NaCl (e.g. pickling salt – min I, K, Ca)
26*
1197.2
43.9
Potassium iodide, KI (solid from lab supplier)
40
1395.9
77.5
Potassium iodide, KI (solid from lab supplier)
59*
~1720
>90 (off scale)
54
1435.0
83.4
Aqueous solution
No solute (pure distilled water)
Sulfuric acid, H2SO4 (conc. solution from lab supplier)
* Approaching maximum solubility in aqueous solution.
3. Visual Inspection
Visually inspect the hydrometer for required data and characteristics. Record details on a test report.
3.1 Required Data
1. Test report reference number.
2. Date of test.
3. Type of test: verification or in-service inspection (for in-service inspection or reverification ensure
that the verification mark is in place).
4. Verifier’s name.
5. Name of owner/user.
6. Address of owner/user.
NITP 17.1, v1
Page 2 of 25
7. Name of contact person on premises.
8. Address of instrument location.
9. Description of instrument.
10. Manufacturer.
11. Model.
12. Serial number.
13. Scale range
14. Smallest scale graduation.
3.2 Characteristics of the Instrument
Where applicable the hydrometer and its use shall comply with the following clauses:
1. The instrument shall comply with the General CoA NMI 17/1/0 Variant 1.
Note:
Dimensions for metric hydrometers are specified in AS 2026:2003 clause 9.
Brix hydrometers typically used in sugar mills are most similar to the L50 series instruments in
AS 2026:2003 regarding the total length, number of scale divisions, range and accuracy.
ASTM standard E126 – 05a on hydrometer testing requires a dimensional check. However,
no dimensional specifications are present in the General CoA NMI 17/1/0 in regards to Variant
1.
2. The instrument shall be used in an appropriate manner (i.e. to test sugar mill products).
3. All mandatory descriptive markings shall be clearly and permanently marked on the hydrometer.
4. The instrument shall be clean.
5. The hydrometer is free from cracks, fissures, deep scratches, rough areas or any other damage
to the glass.
6. Internally, the hydrometer is free from any loose pieces of ballast or other foreign material.
7. The paper scale within the instrument stem is straight and without twist.
8. The scale slippage indicator is present, correctly positioned and free from damage.
9. The instrument shall have a protective case for storage or transport (and for application of a
verification mark).
4. Test Procedures
The following procedures determine if the performance of a hydrometer meets the requirements for
use in trade. Select one method from the three possible methods, and perform all the listed steps on
the hydrometer under test. Record results on a test report.
To improve continuity across the steps, selected details been extracted and moved to Appendix B and
Appendix C. Familiarity with these mandatory Appendices is required.
The test procedures are described to apply to one hydrometer only. A sequence for testing is
provided in clause 5 that also suggests how multiple hydrometers can be tested to maximise
utilisation of the test liquid and reduce the overall testing time.
4.1 Method 1: Verification of a hydrometer calibrated by a Verifying
Authority
Brix hydrometers with a NATA-endorsed calibration report from a Verifying Authority may be verified
as fit for use in trade.
NITP 17.1, v1
Page 3 of 25
1. Ensure that calibration report has not expired and the serial number on the report corresponds
with the submitted hydrometer.
2. Ensure that at least three points on the hydrometer has been tested and the corrections are
expressed in °Bx units.
3. Assess the magnitude of the reported corrections to ensure they are all within the MPE.
The MPE at any point of the scale of a brix hydrometer is 0.1 °Bx.
4. Determine whether the submitted hydrometer has passed or failed.
4.2 Method 2: Comparison against a reference standard in sucrose
Solution
The hydrometer under test is compared to a reference standard at three points over its scale range:
one point in the upper 25%, one point near the middle and one point in the lower 25%. Three readings
will be recorded at each test point.
4.2.1 Preparation
Refer to Appendix B for guidance on selected equipment and Appendix C for standard techniques.
1. If the reported corrections for the thermometer and/or reference standard hydrometer are limited
to a few points within the required scale range, interpolate the correction at other points.
Include a table of interpolated corrections and/or the corrected values with the test report.
2. If possible, select a workspace where the ambient temperature is between 15 °C and 25 °C.
3. Ensure sufficient reagent is available to produce sucrose solutions with appropriate brix values.
4. Ensure that the hydrometers, comparator jar and necessary aids are clean.
Allow these to equilibrate with the ambient temperature over a few minutes.
5. Pour one sucrose solution slowly down the inside of the jar to avoid formation of air bubbles.
Introduce enough solution into the jar so that the hydrometer will float at least 25 mm above the
bottom when it is immersed.
6. Position the thermometer in the jar for regular observation of the test liquid temperature.
Ensure that the test liquid is at thermal equilibrium with the ambient conditions before proceeding.
4.2.2 Taking readings at a test point
1. Stir the liquid, avoiding the formation of air bubbles.
Hold the hydrometer under test above the scale as described in clause C.1. Introduce it into the
comparator jar, releasing it when it is approximately in its “equilibrium position”.
Note:
Equilibrium position is the level of immersion, where the weight of the displaced liquid is
equal to the net buoyant force so the hydrometer eventually floats still (resting).
2. When the hydrometer under test reaches its equilibrium position, raise the hydrometer a few
centimetres from rest to allow the stem to drain.
Clean the stem with the lint-free cloth as described in clause C.3. Gently lower the hydrometer
back to its former resting position.
3. Pay attention to the appearance of the liquid surface.
If the meniscus crinkles or is pulled out of shape, repeat step 2 as the stem is likely to be
contaminated. If necessary, remove the hydrometer for cleaning.
If the stem and the surface of the liquid are clean, it will not change as the hydrometer rises and
falls.
4. Record the temperature observed for the test liquid as described in clause C.5.
5. When the hydrometer has settled to its equilibrium position once again, follow the observation
instructions in clause C.8 to take the reading. Record the observed brix value in the test report.
NITP 17.1, v1
Page 4 of 25
6. Repeat step 1 to introduce the reference standard hydrometer into the jar.
Take care to maintain adequate separation between hydrometers. Refer to clause 2 point 6(c) for
the optimal space around each bulb.
7. Repeat steps 2 – 5 to take a reading on the reference hydrometer.
8. Repeat steps 2 – 5 four times, alternating between the hydrometer under test and the reference
hydrometer, to obtain two more readings from each instrument.
In case of any interruption, stir the liquid before returning to step 2 and proceeding with the
remaining steps to obtain a reading.
4.2.3 Data correction and validation
1. Ensure a total of three readings have been recorded for each hydrometer, in addition to six
observations of the test liquid temperature.
2. As described in clause B.1, apply the necessary scale correction to the observed temperature
readings. Then in accordance with clauses B.2 and C.6, apply the appropriate temperature
corrections from 0 to every reading taken from the two hydrometers.
Record the corrected values in the test report.
3. Check that temperature-corrected values on each hydrometer do not vary by more than 0.05 °Bx
as this indicates a testing anomaly (e.g. insufficient stirring) or a faulty instrument.
4. If the difference between the results of a hydrometer vary by more than 0.05 °Bx, repeat clause
4.2.2 steps 1 – 7 once, twice or three times to replace the discarded data. Replace the sucrose
solution if contamination is suspected.
Reject the instrument if it fails to produce repeatable measurements.
4.2.4 Taking readings at the other test points
1. Empty the jar and conduct a final rinse with some of the next sucrose solution to be used.
Alternatively, use another clean comparator jar.
2.
Repeat clause 4.2.1 steps 4 – 6 using the appropriate sucrose solution for the next test point on
the brix scale, followed by all steps in clauses 4.2.2 and 4.2.3.
Repeat this all again using the solution for the third test point.
4.2.5 Examination of results
1. Calculate the true brix values (i.e. the scale and temperature-corrected values) as described in
clause B.2 for the reference standard hydrometer.
2. For each test point of the hydrometer under test, calculate the difference in the paired results, to
give three values for the error at the test point.
Refer to Table 2 for the pairing of corrected values for comparison at a test point.
Table 2: Results for comparison at a test point
Test
point
Pair
Hydrometer under test
(temperature-corrected brix)
Reference hydrometer
(true brix)
1
1
1st value
1st value
1
2
2nd value
2nd value
1
3
3rd value
3rd value
Difference
(error)
3. Assess the magnitude of the errors at all three test points to ensure they are all within the MPE.
The MPE at any point of the scale of a brix hydrometer is 0.1 °Bx.
4. Determine if the hydrometer under test has passed or failed.
NITP 17.1, v1
Page 5 of 25
4.3 Method 3: Comparison against a reference standard in another test
liquid
The hydrometer under test is compared to the reference hydrometer using the as in clause 4.2 except
the comparator jar is filled with another substance listed in Appendix E instead of aqueous sucrose.
If using sulfuric acid solution as the test liquid, servicing licensees need to be aware of the safety
requirements associated with handling sulfuric acid solutions. For instance, water can be added to
sucrose, sodium chloride (NaCl) and potassium iodide (KI) without issue, however specific techniques
are required to safely dilute concentrated sulfuric acid.
The general guidelines in clause B.4 also cover the preparation of alternative solutions.
Additional requirements for verifiers that apply method 3:
1. Consider worksite safety and environmental requirements when disposing of test liquids.
2. If the test liquid is sulfuric acid, do not wipe the stem of immersed hydrometers as described in
clause 4.2.2 step 2. Remove the hydrometer from the comparator jar for cleaning.
5. Suggested sequence for testing
5.1 General
1. Check the Certificate of Approval for any additional tests required. Make provision for including
these tests in the testing sequence.
2. Visually inspect the hydrometer and record the required details on the test report.
3. Examine the performance by one of the tests: method 1 (clause 4.1), method 2 (clause 4.2) or
method 3 (clause 4.3).
4. Determine whether the hydrometer has passed or failed.
5. In a similar fashion, test any other submitted hydrometers in sequence.
6. Carry out anything else you need to do to complete the procedure. See General Information for
Test Procedures for more information. This may include:

obliterating any pre-existing verification mark hydrometer case;

applying a verification mark on the hydrometer case;

completing the test report for each submitted hydrometer; and

completing an NMI notice of verification form. The instrument owner may also request to have
a copy for their records.
5.2 Multiple hydrometers tested simultaneously
Method 2 and method 3 may be adapted to test multiple submitted hydrometers simultaneously.
1. Check the General CoA NMI 17/1/0 and Variant 1 for any additional tests required.
2. Visually inspect the hydrometers submitted for testing and record the required details.
3. Prepare all the required test solutions, or prepare the test solution with the higher density first and
dilute in turn as suggested in clause B.4.
Note:
If the most dense (highest brix) test solution is prepared at the start with the intention of
gradual dilution, the hydrometers will be tested in order of decreasing brix, i.e. the first
point tested will be the highest brix, and the point with lowest brix will be tested last.
4. Examine the performance of the hydrometers under test according to clause 4.2 or clause 4.3.
NITP 17.1, v1
Page 6 of 25
(a) If there are multiple submitted hydrometers with identical scale range, group the instruments
according to the range.
(b) If necessary, sub-divide the groups so the number of instruments in each group is one less
than the maximum number accommodated by the comparator jar (see clause 2 point 6(c)).
(c) For each group with the same scale range, first immerse all the hydrometers including the
reference standard.
(d) Raise, drain, wipe and re-immerse and read each resting hydrometer in sequence.
(e) Stir the liquid, then perform repeat immersions and obtain additional readings at the test point
using the same sequence.
Note:
Ensure the test liquid temperature is constant throughout all readings (see clauses
C.4 and C.5). Otherwise, record the observed temperature prior to each reading.
(f) For each test point of the hydrometers under test, calculate the difference in the paired results
to give three values for the error at the test point.
Refer to Table 3 for the pairing of temperature-corrected brix and the corresponding true brix
values, in an example where two hydrometers are simultaneously compared to a reference
standard hydrometer.
Table 3: Results for comparison at a test point (two submitted hydrometers)
Test
point
Pair
Hydrometers under test
(temperature corrected brix)
Reference hydrometer
(true brix)
1
1
Hydrometer #1: 1st value
1st value
1
3
Hydrometer #1: 2nd value
2nd value
1
5
Hydrometer #1: 3rd value
3rd value
1
2
Hydrometer #2: 1st value
1st value
1
4
Hydrometer #2: 2nd value
2nd value
1
6
Hydrometer #2: 3rd value
3rd value
Difference
(error)
5. Determine whether the hydrometer has passed or failed.
6. Carry out anything else you need to do to complete the procedure, e.g. removal of a pre-existing
verification mark on a hydrometer case, application of a new mark, etc.
NITP 17.1, v1
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Appendix A: Test Report (Mandatory)
Appendix A contains a test report on which to record the results.
Although the format of the test report may vary according to the individual needs and requirements of
trade measurement inspectors and servicing licensees, the following test report contains the minimum
amount of information that must be recorded.
If the Certificate of Approval requires additional tests, attach pages that record the results of these
tests.
Number each page of the test report in the style shown at the top of each of the following pages.
NITP 17.1, v1
Page 8 of 25
Page…of…
Test Report 1 for Hydrometer Under Test
Test Report for Brix Hydrometers
Required Data (clause 3.1)
Test report reference number ...................................................... Date of test .........................................
Type of test (tick one)
Verification
Reverification
In-service inspection
For in-service inspection or reverification, record the verification mark: ...................................................
Name of owner/user ..................................................................................................................................
Address of owner/user ..............................................................................................................................
Name of contact person on premises .......................................................................................................
Address of instrument location ..................................................................................................................
Description of instrument ..........................................................................................................................
Manufacturer ................................................. Model .................................................................................
Serial number ................................................ Certificate of approval number ..........................................
Scale range ................................................... Smallest scale graduation .................................................
Yes, no or
N/A
General Characteristics (clause 3.2)
Does the hydrometer comply with its Certificate of Approval?
Is the instrument being used in an appropriate manner (i.e.to test sugar mill products)?
Are all mandatory descriptive markings clearly and permanently marked?
Is the instrument clean?
Is the hydrometer is free from cracks, fissures, deep scratches, rough areas or any other
damage to the glass?
Internally, is the hydrometer is free from any loose pieces of ballast or other foreign
material?
Is the paper scale within the instrument stem is straight and without twist?
Is the scale slippage indicator is present, correctly positioned and free from damage?
Does the instrument have a protective case for storage or transport (and for application of
a verification mark)?
NITP 17.1, v1
Page 9 of 25
Page…of…
Test Report 1 for Hydrometer Under Test
Method 1: Verification of a hydrometer calibrated by a Verifying
Authority (clause 4.1)
NMI lab or Verifying Authority name .........................................................................................................
NATA report reference number ................................................. Calibration expiry date ..........................
Number of test points on calibration report ...............................................................................................
Did the hydrometer pass the visual inspection?
Yes
No
Were all the corrections on the calibration certificate within the MPE?
Yes
No
Was the hydrometer verified?
Yes
No
Verifier’s name .......................................................................... Identification number .............................
Signature ...................................................................................................................................................
Comments .................................................................................................................................................
...................................................................................................................................................................
...................................................................................................................................................................
Method 2 or Method 3: Comparison against a reference standard
(clauses 4.2 and 4.3)
If method 3 is applied, state the test liquid used .......................................................................................
Test point 1
Observed
temperature
True
temperature
Hydrometer
serial # or designation
Tick if
ref std
Observed
brix reading
Temperature-corrected
brix value (°Bx)
Add extra rows for multiple hydrometers under test
Data at test point 1 validated
Yes
No
Test point 2
Observed
temperature
True
temperature
Hydrometer
serial # or designation
Tick if
ref std
Observed
brix reading
Temperature-corrected
brix value (°Bx)
Add extra rows for multiple hydrometers under test
Data at test point 2 validated
NITP 17.1, v1
Yes
No
Page 10 of 25
Page…of…
Test Report 1 for Hydrometer Under Test
Test point 3
Observed
temperature
True
temperature
Hydrometer
serial # or designation
Tick if
ref std
Observed
brix reading
Temperature-corrected
brix value (°Bx)
Add extra rows for multiple hydrometers under test
Data at test point 3 validated
Yes
No
Examination of results
Test point
number
Reference standard hydrometer:
[Scale and temperature-corrected]
True brix value (°Bx)
Hydrometer under test:
Temperature-corrected
brix value (°Bx)
Difference/
error
(°Bx)
1
1
1
2
2
2
3
3
3
Add extra columns for multiple hydrometers under test
Did the hydrometer pass the visual inspection?
Yes
No
Were all the errors against the reference standard at all test points within the MPE?
Yes
No
Was the hydrometer verified?
Yes
No
Verifier’s name .......................................................................... Identification number .............................
Signature ...................................................................................................................................................
Comments .................................................................................................................................................
...................................................................................................................................................................
...................................................................................................................................................................
NITP 17.1, v1
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Page…of…
Test Report 2 for the Standards of Measurement
Details of the Reference Standards of Measurement (clause 2)
Reference Standard Hydrometer
Make
Model
Smallest scale graduation (°Bx)
Serial number
Scale range (°Bx)
Maximum
Minimum
Regulation 13 certificate number
Certificate expiry date
Expanded measurement uncertainty associated with corrections (k=2)
Regulation 13 or NATA-certified Thermometer
Make
Model
Smallest scale graduation (°C)
Serial number
Regulation 13 certificate number
Certificate expiry date
Expanded measurement uncertainty associated with corrections (k=2)
NITP 17.1, v1
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Page…of…
Test Report 2 for the Standards of Measurement
Table of Interpolated Corrections and Scale Corrected Reference
Standard Hydrometer Values (clauses 2 and B.2)
Tempcorrected
reading
(°Bx)
Scale correction (°Bx)
Calibration
report
NITP 17.1, v1
Interpolated
True brix
(°Bx)
Tempcorrected
reading
(°Bx)
Scale correction (°Bx)
Calibration
report
Interpolated
True brix
(°Bx)
Page 13 of 25
Page…of…
Test Report 2 for the Standards of Measurement
Temperature Correction Table to Convert Observed Temperature to True
Temperature for the Thermometer (clauses 2 and B.1)
Observed
True Observed
True Observed
True
Correction (°C)
Correction (°C)
Correction (°C)
temp
temp temp
temp temp
temp
Certified Interpolated (°C)
Certified Interpolated (°C)
Certified Interpolated (°C)
(°C)
(°C)
(°C)
14.0
19.7
25.4
14.1
19.8
25.5
14.2
19.9
25.6
14.3
20.0
25.7
14.4
20.1
25.8
14.5
20.2
25.9
14.6
20.3
26.0
14.7
20.4
26.1
14.8
20.5
26.2
14.9
20.6
26.3
15.0
20.7
26.4
15.1
20.8
26.5
15.2
20.9
26.6
15.3
21.0
26.7
15.4
21.1
26.8
15.5
21.2
26.9
15.6
21.3
27.0
15.7
21.4
27.1
15.8
21.5
27.2
15.9
21.6
27.3
16.0
21.7
27.4
16.1
21.8
27.5
16.2
21.9
27.6
16.3
22.0
27.7
16.4
22.1
27.8
16.5
22.2
27.9
16.6
22.3
28.0
16.7
22.4
28.1
16.8
22.5
28.2
16.9
22.6
28.3
17.0
22.7
28.4
17.1
22.8
28.5
17.2
22.9
28.6
17.3
23.0
28.7
17.4
23.1
28.8
17.5
23.2
28.9
17.6
23.3
29.0
17.7
23.4
29.1
17.8
23.5
29.2
17.9
23.6
29.3
18.0
23.7
29.4
18.1
23.8
29.5
18.2
23.9
29.6
18.3
24.0
29.7
18.4
24.1
29.8
18.5
24.2
29.9
18.6
24.3
30.0
18.7
24.4
30.1
18.8
24.5
30.2
18.9
24.6
30.3
19.0
24.7
30.4
19.1
24.8
30.5
19.2
24.9
30.6
19.3
25.0
30.7
19.4
25.1
30.8
19.5
25.2
30.9
19.6
25.3
31.0
NITP 17.1, v1
Page 14 of 25
Appendix B: Additional guidance for some equipment (Mandatory)
B.1 Corrections for the thermometer
The scale corrections stated on the certificate of the thermometer shall be applied to the observed
temperatures if any the absolute value of any correction exceeds 0.2 °C. If scale corrections are not
stated for the entire range, calculate the correction for each 0.1 °C increment by interpolation (e.g.
linear) in between adjacent calibration test points.
If all the scale corrections are within ±0.2 °C, the observed temperature can be used as the true
temperature.
Ensure the thermometer is recalibrated according to the calibration schedule. New thermometers are
prone to drift due to continued annealing of the glass. Conduct periodic ice-point checks to ensure
that any drift is either insignificant or added to the certified scale corrections.
Ensure that the liquid-in-glass thermometer is used according on the method stated in the calibration
certificate. Do not fully immerse a thermometer calibrated as partial-immersion device or only partially
immerse a thermometer calibrated as full-immersion device.
B.2 Temperature and scale corrections for the reference hydrometer
The scale corrections stated on the certificate of the reference hydrometer are valid when the
instrument and test liquid is at the temperature stated on the calibration certificate. This is usually
20.0 °C, the reference temperature at which the unit °Bx is defined.
Refer to steps 1 – 4 to obtain the appropriate scale correction for a reference hydrometer:
1. Observe the thermometer with each reading on the reference hydrometer
2. If a reading is not performed at 20.0 °C, determine the appropriate temperature correction
from Appendix D. Calculate and record the temperature-corrected reading.
3. For each temperature-corrected reading, determine the appropriate scale correction from the
Reg 13 certificate or the accompanying calibration certificate. If scale corrections are not
stated for the entire range, calculate the correction at each point by interpolation in between
adjacent calibration test points.
The measurement uncertainty of the interpolated correction can be approximated as
equivalent to the uncertainty of the corrections in the calibration report provided that the
reference hydrometer is verified at a minimum of six test points (per 10 °Bx range). The
reference hydrometer should be verified at a number of points that do not correspond with the
“manufacturer calibration points”. Typically, the manufacturer marks three points (minimum,
maximum and centre of the scale) based on a three-point calibration and marks the two
intervals in between with equal scale divisions.
4. Calculate and record the “scale and temperature-corrected” brix value (i.e. “true” brix value).
B.3 Number and amount of test liquids
The performance of a submitted hydrometer shall be tested at three points: one point in the upper
25% of the scale, one point near the middle and one point in the lower 25% of the scale. Three test
liquids with different brix values are required to perform a complete test.
The minimum required amount of test liquid is the volume of the comparator jar. Ensure sufficient
reagent is available to prepare twice the minimum amount in case the test liquid is contaminated and
needs a new surface (by overflowing with more liquid of the same brix) or needs to be replaced.
NITP 17.1, v1
Page 15 of 25
B.4 Test liquid preparation
It is not necessary to determine the exact densities, concentrations or brix values of the test liquids.
However, approximate values from concentration and density tables (refer to Appendix E) can
streamline the solution preparation or dilution process.
Prepare several test liquids up to several hours in advance with brix values corresponding with the
range encompassed by the submitted hydrometer. Cover the containers to prevent contamination
while not in use. Shake or stir well before use.
Alternatively, prepare the solution with the highest brix first. Dilute the solution with sufficient water to
ensure that the brix is within the range required for the comparison at the second test point. Repeat to
obtain a test liquid with a lower brix corresponding with the third test point.
Note:
Reusing the same test liquid on several hydrometers increases likelihood of surface
contamination, particularly if sucrose solutions are used. If the presence of surface impurities
is suspected, generate a new surface by overflowing with extra test liquid of the same brix
before performing dilutions.
NITP 17.1, v1
Page 16 of 25
Appendix C: Standard procedures (Mandatory)
C.1 Cleanliness of the hydrometer
For uniform and reproducible readings, the hydrometers shall be clean and dry before immersion.

Prepare the hydrometers, comparator jar and necessary aids by washing with soap and water.
Dry, then wipe with a cloth moistened with alcohol to remove any residual soap film. If there are
hard to reach surfaces, rinse with alcohol and then air dry.

Other similar methods of cleaning may be employed. Take care not to damage the hydrometer.

Do not touch the hydrometer at the bulb or on the stem portion containing the scale after
cleaning. Hold the hydrometer above the scale between thumb and index finger.

Reject the hydrometer if stubborn residue remains resulting in a faulty meniscus.
C.2 Cleaning of the stem in the ‘double immersion’ method
One way to reduce the time required to perform repeat readings is to allow hydrometer to remain in
the jar after each reading. The stem is cleaned prior to the next reading, i.e. the liquid is wiped away
from the stem before the second immersion.
Warning:
Do not wipe the stem of an immersed hydrometer when the test liquid is sulfuric acid.

Lift a resting hydrometer a few centimetres and wipe the stem with a lint-free cloth. Focus on
the parts of the stem close to the intersection with the liquid surface. Carefully lower the
hydrometer to the resting position and proceed with the remaining steps to obtain a reading.

Ideally, the stem of the hydrometer shall not be wet more than two graduations above the
surface, so that the liquid will rise uniformly around the stem and merge into an imperceptible
film on the stem.
C.3 Equilibration of the hydrometer temperature with ambient
For uniform and reproducible readings, the hydrometer must be at the temperature of the liquid (which
is same as ambient temperature) before immersion.
To reduce the equilibration period required before immersion, reduce the following:

Difference in temperature of the cleaning agents (e.g. running water) and ambient.

Duration that the hydrometer is immersed or in contact with cleaning agents

Duration that the hydrometer is handled
C.4 Minimising variations in the ambient and liquid temperature

Minimise changes in the ambient temperature by performing the test in a draught-free location
away from direct sunlight. Controlled laboratory conditions are recommended.

Allow sufficient time for the temperature of the test liquid to reach thermal equilibrium with
ambient temperature. Any measured difference in the temperature should not exceed 0.2 °C.

Minimise thermal or concentration gradients in the test liquid by mixing thoroughly prior to
immersing the hydrometer. Periodically stir the test liquid in between a series of double
immersions or if the testing is interrupted.
C.5 Monitoring the liquid temperature
A preliminary study is recommended to ascertain the magnitude of spatial temperature gradients in
the comparator jar under test conditions:

If negligible, the thermometer observations can be taken from the same location in the jar

If not negligible, apply one or more of the recommendations in clause C.4.
NITP 17.1, v1
Page 17 of 25

Monitor the temperature of the test liquid using the thermometer throughout the tests. Record
the observed temperature to the nearest 0.1 °C for each hydrometer reading.
C.6 Temperature corrections for the hydrometer under test
The Brix scale is defined at 20.0 °C. When brix readings are taken at any other temperature, the
corrections in Appendix D shall be applied.
Refer to the followings steps to obtain the appropriate temperature correction:
5. Take note of the temperature with each reading on the hydrometer
6. If a reading is not performed at 20.0 °C, determine the appropriate temperature correction
from Appendix D. Calculate and record the temperature-corrected reading.
C.7 Maintaining constant surface tension
Corrections for the influence of surface tension are unnecessary as the test liquids are in the same
surface tension category as the substance (cane juice) routinely measured for trade.
Compared to mineral oils and strong alcoholic mixtures which readily adhere to the hydrometer stem,
weak aqueous solutions of sugar, salts and acids are more prone to unpredictable changes in surface
tension caused by surface films of impurities.

Reduce the risk of contamination by performing the test in an area that is relatively free of dust
and air-borne particles. Ensure the residual soap film is removed from the hydrometers,
comparator jar, stirrer and thermometer. Note that the risk of contamination increases where
the test is prolonged or the test liquid is reused (e.g. multiple hydrometers of the same scale
range are verified in the same test liquid).

If contamination of the test liquid surface is suspected, purify the surface of the test liquid by
causing an overflow of the liquid before observing a reading. If required, replace entire
container of test liquid.

In case the hydrometer is immersed too deep or an abnormal meniscus is observed, clean the
stem (see clause C.1) or remove the hydrometer from the jar and thoroughly clean before
restarting the measurement (see clause C.2).
C.8 Observation method (reading the scale at the base of the meniscus)
Brix hydrometers with scales adjusted for reading at the top of the meniscus are unconventional and
rarely available. Laboratory methods at sugar mills require application of a meniscus correction (MC)
when conventional hydrometers are used for measurements in opaque liquids such as cane juice
(refer to Appendix G for details). To avoid conflict with laboratory methods, only brix hydrometers
manufactured in the conventional manner shall be submitted for verification.

Take all readings from where the base of the meniscus intersects the hydrometer stem.

When taking the reading, view the scale from below and raise the line of sight until it is as close
as possible to the plane of the liquid surface. Estimate to one-tenth of a scale division.

This may be facilitated by the use of the background screen positioned about 100 mm from the
hydrometer stem. Adjust the screen so that the line separating the black and white halves is
20 – 25 mm below the plane of the liquid surface.

In the absence of a background screen, a white card held behind the comparator jar just below
the liquid surface will also improve the readability.

The meniscus will appear as a white ellipse against a black background and as the eye is
raised, the ellipse flattens out until it becomes a fine white line against a dark background. Take
the reading with reference to this line.
NITP 17.1, v1
Page 18 of 25
Appendix D: Corrections for brix hydrometer readings outside the reference temperature (Mandatory)
D.1 Temperature corrections to readings of brix hydrometers (calibrated at 20.0 °C)
This table is calculated using data on thermal expansion of sugar solutions by Plato assuming the instrument to be Jena 16 glass. The table should be used
with caution and only for approximate results when the temperature differs much from the standard temperature or from the temperature of surrounding air. Reference: BSES
Laboratory Manual for Sugar Mills, Vol. 2, Table 1, Page 1 of 2.
NITP 17.1, v1
Page 19 of 25
D.2 Temperature-correction for the temperature range 15 °C to 25 °C
Intermediate corrections calculated obtained via linear interpolation within the values in clause D.1. Other interpolation methods are permitted.
True
temp
(°C)
15.0
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
16.0
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
17.0
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
18.0
18.1
18.2
18.3
18.4
18.5
18.6
18.7
18.8
18.9
19.0
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
0.20
0.20
0.19
0.19
0.19
0.19
0.18
0.18
0.18
0.17
0.17
0.17
0.16
0.16
0.15
0.15
0.15
0.14
0.14
0.13
0.13
0.13
0.12
0.12
0.11
0.11
0.11
0.10
0.10
0.09
0.09
0.09
0.08
0.08
0.07
0.07
0.07
0.06
0.06
0.05
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.20
0.20
0.20
0.19
0.19
0.19
0.18
0.18
0.18
0.18
0.17
0.17
0.16
0.16
0.16
0.15
0.15
0.14
0.14
0.14
0.13
0.13
0.12
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.21
0.20
0.20
0.20
0.19
0.19
0.19
0.18
0.18
0.18
0.17
0.17
0.17
0.16
0.16
0.15
0.15
0.15
0.14
0.14
0.13
0.13
0.13
0.12
0.12
0.11
0.11
0.11
0.10
0.10
0.09
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.19
0.18
0.18
0.18
0.17
0.17
0.16
0.16
0.16
0.15
0.15
0.14
0.14
0.14
0.13
0.13
0.12
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.19
0.18
0.18
0.17
0.17
0.17
0.16
0.16
0.15
0.15
0.15
0.14
0.14
0.13
0.13
0.13
0.12
0.12
0.11
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.18
0.17
0.17
0.16
0.16
0.16
0.15
0.15
0.14
0.14
0.14
0.13
0.13
0.12
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.15
0.14
0.14
0.13
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.24
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.25
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.25
0.25
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.26
0.25
0.25
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.22
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.06
0.05
0.05
0.04
0.03
0.03
0.02
0.02
0.01
0.01
0.26
0.26
0.25
0.25
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.04
0.03
0.02
0.02
0.01
0.01
0.26
0.26
0.26
0.25
0.25
0.24
0.24
0.23
0.23
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.04
0.03
0.02
0.02
0.01
0.01
0.27
0.26
0.26
0.25
0.25
0.25
0.24
0.24
0.23
0.23
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.04
0.03
0.02
0.02
0.01
0.01
0.27
0.27
0.26
0.26
0.25
0.25
0.24
0.24
0.24
0.23
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.17
0.16
0.16
0.15
0.14
0.14
0.13
0.13
0.12
0.12
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.04
0.03
0.02
0.02
0.01
0.01
0.28
0.27
0.27
0.26
0.26
0.25
0.25
0.24
0.24
0.23
0.23
0.22
0.22
0.21
0.21
0.20
0.20
0.19
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.11
0.10
0.09
0.09
0.08
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.04
0.03
0.02
0.02
0.01
0.01
NITP 17.1, v1
Observed brix
20 21 22 23 24 25 26
Subract from the observed brix
0.28 0.28 0.29 0.29 0.30 0.30 0.30
0.28 0.28 0.28 0.29 0.29 0.30 0.30
0.27 0.27 0.28 0.28 0.29 0.29 0.29
0.27 0.27 0.27 0.28 0.28 0.29 0.29
0.26 0.26 0.27 0.27 0.28 0.28 0.28
0.26 0.26 0.26 0.27 0.27 0.28 0.28
0.25 0.25 0.26 0.26 0.27 0.27 0.27
0.25 0.25 0.25 0.26 0.26 0.27 0.27
0.24 0.24 0.25 0.25 0.26 0.26 0.26
0.24 0.24 0.24 0.25 0.25 0.26 0.26
0.23 0.23 0.24 0.24 0.25 0.25 0.25
0.23 0.23 0.23 0.24 0.24 0.24 0.25
0.22 0.22 0.23 0.23 0.23 0.24 0.24
0.22 0.22 0.22 0.23 0.23 0.23 0.23
0.21 0.21 0.22 0.22 0.22 0.23 0.23
0.21 0.21 0.21 0.21 0.22 0.22 0.22
0.20 0.20 0.21 0.21 0.21 0.21 0.22
0.20 0.20 0.20 0.20 0.21 0.21 0.21
0.19 0.19 0.19 0.20 0.20 0.20 0.20
0.19 0.19 0.19 0.19 0.19 0.20 0.20
0.18 0.18 0.18 0.19 0.19 0.19 0.19
0.17 0.18 0.18 0.18 0.18 0.18 0.19
0.17 0.17 0.17 0.17 0.18 0.18 0.18
0.16 0.16 0.17 0.17 0.17 0.17 0.17
0.16 0.16 0.16 0.16 0.16 0.17 0.17
0.15 0.15 0.15 0.16 0.16 0.16 0.16
0.14 0.15 0.15 0.15 0.15 0.15 0.15
0.14 0.14 0.14 0.14 0.15 0.15 0.15
0.13 0.13 0.14 0.14 0.14 0.14 0.14
0.13 0.13 0.13 0.13 0.13 0.14 0.14
0.12 0.12 0.12 0.13 0.13 0.13 0.13
0.11 0.12 0.12 0.12 0.12 0.12 0.12
0.11 0.11 0.11 0.11 0.11 0.12 0.12
0.10 0.10 0.10 0.11 0.11 0.11 0.11
0.10 0.10 0.10 0.10 0.10 0.10 0.10
0.09 0.09 0.09 0.09 0.09 0.10 0.10
0.08 0.08 0.09 0.09 0.09 0.09 0.09
0.08 0.08 0.08 0.08 0.08 0.08 0.08
0.07 0.07 0.07 0.07 0.07 0.07 0.08
0.07 0.07 0.07 0.07 0.07 0.07 0.07
0.06 0.06 0.06 0.06 0.06 0.06 0.06
0.05 0.05 0.05 0.05 0.05 0.05 0.06
0.05 0.05 0.05 0.05 0.05 0.05 0.05
0.04 0.04 0.04 0.04 0.04 0.04 0.04
0.04 0.04 0.04 0.04 0.04 0.04 0.04
0.03 0.03 0.03 0.03 0.03 0.03 0.03
0.02 0.02 0.02 0.02 0.02 0.02 0.02
0.02 0.02 0.02 0.02 0.02 0.02 0.02
0.01 0.01 0.01 0.01 0.01 0.01 0.01
0.01 0.01 0.01 0.01 0.01 0.01 0.01
27
28
29
30
31
32
33
34
35
36
37
38
39
40
45
50
55
60
65
70
0.31
0.30
0.30
0.29
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.17
0.17
0.16
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.10
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.03
0.02
0.01
0.01
0.31
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.27
0.26
0.26
0.25
0.24
0.24
0.23
0.23
0.22
0.21
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.10
0.10
0.09
0.09
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.03
0.03
0.02
0.01
0.01
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.25
0.24
0.23
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.11
0.10
0.09
0.09
0.08
0.07
0.07
0.06
0.05
0.05
0.04
0.03
0.03
0.02
0.01
0.01
0.32
0.31
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.27
0.26
0.25
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.17
0.17
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.11
0.10
0.09
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.32
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.26
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.17
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.33
0.32
0.31
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.25
0.24
0.23
0.23
0.22
0.21
0.21
0.20
0.20
0.19
0.18
0.17
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.33
0.32
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.25
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.10
0.09
0.09
0.08
0.07
0.07
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.33
0.33
0.32
0.31
0.31
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.26
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.21
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.12
0.11
0.10
0.10
0.09
0.09
0.08
0.08
0.07
0.06
0.05
0.05
0.04
0.03
0.02
0.02
0.01
0.33
0.32
0.32
0.31
0.31
0.30
0.29
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.24
0.24
0.23
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.33
0.33
0.32
0.31
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.27
0.26
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.33
0.33
0.32
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.25
0.25
0.24
0.23
0.23
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.34
0.33
0.32
0.32
0.31
0.31
0.30
0.29
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.24
0.23
0.23
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.17
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.34
0.33
0.33
0.32
0.31
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.24
0.24
0.23
0.22
0.22
0.21
0.20
0.19
0.19
0.18
0.17
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.34
0.33
0.33
0.32
0.32
0.31
0.30
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.25
0.25
0.24
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.36
0.35
0.34
0.34
0.33
0.32
0.31
0.30
0.30
0.29
0.28
0.27
0.27
0.26
0.25
0.25
0.24
0.23
0.22
0.22
0.21
0.20
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.15
0.14
0.13
0.13
0.12
0.11
0.11
0.10
0.09
0.08
0.08
0.07
0.06
0.06
0.05
0.04
0.04
0.03
0.02
0.01
0.01
0.36
0.35
0.35
0.34
0.33
0.33
0.32
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.26
0.26
0.25
0.24
0.23
0.23
0.22
0.21
0.21
0.20
0.19
0.19
0.18
0.17
0.16
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.10
0.09
0.09
0.08
0.07
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.01
0.37
0.36
0.36
0.35
0.34
0.34
0.33
0.32
0.31
0.31
0.30
0.29
0.29
0.28
0.27
0.27
0.26
0.25
0.24
0.24
0.23
0.22
0.21
0.21
0.20
0.19
0.18
0.17
0.17
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.10
0.09
0.09
0.08
0.07
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.01
0.38
0.37
0.37
0.36
0.35
0.35
0.34
0.33
0.32
0.32
0.31
0.30
0.29
0.29
0.28
0.27
0.26
0.25
0.25
0.24
0.23
0.22
0.21
0.21
0.20
0.19
0.18
0.17
0.17
0.16
0.15
0.14
0.14
0.13
0.12
0.12
0.11
0.10
0.09
0.09
0.08
0.07
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.01
0.38
0.37
0.37
0.36
0.35
0.35
0.34
0.33
0.32
0.32
0.31
0.30
0.30
0.29
0.28
0.28
0.27
0.26
0.25
0.25
0.24
0.23
0.22
0.22
0.21
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.14
0.14
0.13
0.12
0.11
0.10
0.10
0.09
0.08
0.07
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.01
0.39
0.38
0.38
0.37
0.36
0.36
0.35
0.34
0.33
0.33
0.32
0.31
0.30
0.30
0.29
0.28
0.27
0.26
0.26
0.25
0.24
0.23
0.22
0.22
0.21
0.20
0.19
0.18
0.18
0.17
0.16
0.15
0.14
0.14
0.13
0.12
0.11
0.10
0.10
0.09
0.08
0.07
0.06
0.06
0.05
0.04
0.03
0.02
0.02
0.01
Page 20 of 25
True
temp
(°C)
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
21.0
21.1
21.2
21.3
21.4
21.5
21.6
21.7
21.8
21.9
22.0
22.1
22.2
22.3
22.4
22.5
22.6
22.7
22.8
22.9
23.0
23.1
23.2
23.3
23.4
23.5
23.6
23.7
23.8
23.9
24.0
24.1
24.2
24.3
24.4
24.5
24.6
24.7
24.8
24.9
25.0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0.00
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.26
0.27
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.25
0.26
0.27
0.27
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.04
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.27
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.26
0.27
0.28
0.00
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.27
0.28
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.16
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.28
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.01
0.01
0.02
0.02
0.03
0.03
0.04
0.05
0.05
0.06
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.16
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.30
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.16
0.17
0.17
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.31
0.31
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.14
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.32
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.01
0.01
0.02
0.02
0.03
0.04
0.04
0.05
0.05
0.06
0.07
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.31
0.32
NITP 17.1, v1
Observed brix
21 22 23 24 25
Add to the observed brix
0.01 0.01 0.01 0.01 0.01
0.01 0.01 0.01 0.01 0.01
0.02 0.02 0.02 0.02 0.02
0.02 0.03 0.03 0.03 0.03
0.03 0.03 0.03 0.03 0.04
0.04 0.04 0.04 0.04 0.04
0.04 0.04 0.05 0.05 0.05
0.05 0.05 0.05 0.05 0.06
0.06 0.06 0.06 0.06 0.06
0.06 0.06 0.07 0.07 0.07
0.07 0.07 0.07 0.07 0.08
0.07 0.08 0.08 0.08 0.08
0.08 0.08 0.08 0.09 0.09
0.09 0.09 0.09 0.09 0.09
0.09 0.09 0.10 0.10 0.10
0.10 0.10 0.10 0.10 0.11
0.10 0.11 0.11 0.11 0.11
0.11 0.11 0.11 0.12 0.12
0.12 0.12 0.12 0.12 0.12
0.12 0.12 0.13 0.13 0.13
0.13 0.13 0.13 0.14 0.14
0.14 0.14 0.14 0.14 0.14
0.14 0.15 0.15 0.15 0.15
0.15 0.15 0.15 0.16 0.16
0.16 0.16 0.16 0.16 0.17
0.16 0.17 0.17 0.17 0.17
0.17 0.17 0.18 0.18 0.18
0.18 0.18 0.18 0.18 0.19
0.19 0.19 0.19 0.19 0.19
0.19 0.19 0.20 0.20 0.20
0.20 0.20 0.20 0.21 0.21
0.21 0.21 0.21 0.21 0.21
0.21 0.22 0.22 0.22 0.22
0.22 0.22 0.22 0.23 0.23
0.23 0.23 0.23 0.23 0.24
0.23 0.24 0.24 0.24 0.24
0.24 0.24 0.25 0.25 0.25
0.25 0.25 0.25 0.25 0.26
0.26 0.26 0.26 0.26 0.26
0.26 0.26 0.27 0.27 0.27
0.27 0.27 0.27 0.27 0.28
0.27 0.28 0.28 0.28 0.28
0.28 0.28 0.29 0.29 0.29
0.29 0.29 0.29 0.30 0.30
0.29 0.30 0.30 0.30 0.31
0.30 0.30 0.31 0.31 0.31
0.31 0.31 0.31 0.32 0.32
0.31 0.32 0.32 0.32 0.33
0.32 0.32 0.33 0.33 0.33
0.32 0.33 0.33 0.34 0.34
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
45
50
55
60
65
70
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.34
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.16
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.10
0.11
0.12
0.12
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.33
0.33
0.34
0.35
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.32
0.33
0.34
0.35
0.35
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.33
0.34
0.35
0.35
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.17
0.18
0.19
0.19
0.20
0.21
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.09
0.10
0.11
0.12
0.12
0.13
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.19
0.20
0.20
0.21
0.22
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.32
0.33
0.34
0.34
0.35
0.36
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.35
0.36
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.20
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.28
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.36
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.35
0.35
0.36
0.37
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.36
0.36
0.37
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.19
0.19
0.20
0.21
0.22
0.23
0.23
0.24
0.25
0.26
0.27
0.27
0.28
0.29
0.30
0.31
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.38
0.01
0.01
0.02
0.03
0.04
0.04
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.10
0.11
0.11
0.12
0.13
0.13
0.14
0.15
0.16
0.16
0.17
0.18
0.19
0.20
0.20
0.21
0.22
0.23
0.24
0.24
0.25
0.26
0.27
0.28
0.28
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.09
0.10
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.17
0.18
0.19
0.20
0.21
0.21
0.22
0.23
0.24
0.25
0.25
0.26
0.27
0.28
0.29
0.29
0.30
0.31
0.32
0.32
0.33
0.34
0.35
0.35
0.36
0.37
0.37
0.38
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.38
0.39
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.38
0.39
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.38
0.38
0.39
0.40
0.01
0.02
0.02
0.03
0.04
0.05
0.06
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.14
0.14
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.34
0.34
0.35
0.36
0.37
0.38
0.38
0.39
0.40
0.01
0.02
0.03
0.04
0.05
0.05
0.06
0.07
0.08
0.09
0.10
0.10
0.11
0.12
0.13
0.13
0.14
0.15
0.15
0.16
0.17
0.18
0.18
0.19
0.20
0.21
0.22
0.22
0.23
0.24
0.25
0.26
0.26
0.27
0.28
0.29
0.30
0.30
0.31
0.32
0.33
0.33
0.34
0.35
0.36
0.36
0.37
0.38
0.38
0.39
Page 21 of 25
D.3 Temperature-corrected brix values for the temperature range 15 °C to 25 °C
True
temp
(°C)
15.0
15.1
15.2
15.3
15.4
15.5
15.6
15.7
15.8
15.9
16.0
16.1
16.2
16.3
16.4
16.5
16.6
16.7
16.8
16.9
17.0
17.1
17.2
17.3
17.4
17.5
17.6
17.7
17.8
17.9
18.0
18.1
18.2
18.3
18.4
18.5
18.6
18.7
18.8
18.9
19.0
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
0.00
-0.20
-0.20
-0.19
-0.19
-0.19
-0.19
-0.18
-0.18
-0.18
-0.17
-0.17
-0.17
-0.16
-0.16
-0.15
-0.15
-0.15
-0.14
-0.14
-0.13
-0.13
-0.13
-0.12
-0.12
-0.11
-0.11
-0.11
-0.10
-0.10
-0.09
-0.09
-0.09
-0.08
-0.08
-0.07
-0.07
-0.07
-0.06
-0.06
-0.05
-0.05
-0.05
-0.04
-0.04
-0.03
-0.03
-0.02
-0.02
-0.01
-0.01
5.00
4.78
4.78
4.79
4.79
4.80
4.80
4.80
4.81
4.81
4.82
4.82
4.82
4.83
4.83
4.84
4.84
4.84
4.85
4.85
4.86
4.86
4.86
4.87
4.87
4.88
4.88
4.88
4.89
4.89
4.90
4.90
4.91
4.91
4.92
4.92
4.93
4.93
4.94
4.94
4.95
4.95
4.96
4.96
4.97
4.97
4.98
4.98
4.99
4.99
5.00
6.00
5.78
5.78
5.78
5.79
5.79
5.80
5.80
5.80
5.81
5.81
5.82
5.82
5.82
5.83
5.83
5.84
5.84
5.85
5.85
5.85
5.86
5.86
5.87
5.87
5.87
5.88
5.88
5.89
5.89
5.90
5.90
5.91
5.91
5.92
5.92
5.93
5.93
5.94
5.94
5.95
5.95
5.96
5.96
5.97
5.97
5.98
5.98
5.99
5.99
6.00
NITP 17.1, v1
7.00
6.77
6.78
6.78
6.78
6.79
6.79
6.80
6.80
6.80
6.81
6.81
6.82
6.82
6.83
6.83
6.83
6.84
6.84
6.85
6.85
6.86
6.86
6.86
6.87
6.87
6.88
6.88
6.89
6.89
6.90
6.90
6.91
6.91
6.92
6.92
6.93
6.93
6.94
6.94
6.95
6.95
6.96
6.96
6.97
6.97
6.98
6.98
6.99
6.99
7.00
8.00
7.77
7.77
7.78
7.78
7.78
7.79
7.79
7.80
7.80
7.80
7.81
7.81
7.82
7.82
7.83
7.83
7.84
7.84
7.84
7.85
7.85
7.86
7.86
7.87
7.87
7.88
7.88
7.89
7.89
7.90
7.90
7.91
7.91
7.92
7.92
7.93
7.93
7.94
7.94
7.95
7.95
7.96
7.96
7.97
7.97
7.98
7.98
7.99
7.99
8.00
9.00 10.00 11.00 12.00 13.00 14.00 15.00 16.00 17.00 18.00 19.00 20.00
8.76 9.76 10.76 11.75 12.75 13.74 14.74 15.74 16.73 17.73 18.72 19.72
8.77 9.76 10.76 11.76 12.75 13.75 14.74 15.74 16.74 17.73 18.73 19.73
8.77 9.77 10.76 11.76 12.76 13.75 14.75 15.74 16.74 17.74 18.73 19.73
8.78 9.77 10.77 11.76 12.76 13.76 14.75 15.75 16.75 17.74 18.74 19.74
8.78 9.78 10.77 11.77 12.76 13.76 14.76 15.75 16.75 17.75 18.74 19.74
8.78 9.78 10.78 11.77 12.77 13.76 14.76 15.76 16.75 17.75 18.75 19.75
8.79 9.78 10.78 11.78 12.77 13.77 14.76 15.76 16.76 17.76 18.75 19.75
8.79 9.79 10.78 11.78 12.78 13.77 14.77 15.77 16.76 17.76 18.76 19.76
8.80 9.79 10.79 11.78 12.78 13.78 14.77 15.77 16.77 17.76 18.76 19.76
8.80 9.80 10.79 11.79 12.78 13.78 14.78 15.77 16.77 17.77 18.77 19.77
8.80 9.80 10.80 11.79 12.79 13.78 14.78 15.78 16.78 17.77 18.77 19.77
8.81 9.81 10.80 11.80 12.79 13.79 14.79 15.78 16.78 17.78 18.78 19.78
8.81 9.81 10.81 11.80 12.80 13.80 14.79 15.79 16.79 17.78 18.78 19.78
8.82 9.82 10.81 11.81 12.80 13.80 14.80 15.80 16.79 17.79 18.79 19.79
8.82 9.82 10.82 11.81 12.81 13.81 14.80 15.80 16.80 17.80 18.79 19.79
8.83 9.83 10.82 11.82 12.82 13.81 14.81 15.81 16.80 17.80 18.80 19.80
8.83 9.83 10.83 11.82 12.82 13.82 14.82 15.81 16.81 17.81 18.80 19.80
8.84 9.84 10.83 11.83 12.83 13.82 14.82 15.82 16.82 17.81 18.81 19.81
8.84 9.84 10.84 11.84 12.83 13.83 14.83 15.82 16.82 17.82 18.81 19.81
8.85 9.85 10.84 11.84 12.84 13.84 14.83 15.83 16.83 17.82 18.82 19.82
8.85 9.85 10.85 11.85 12.84 13.84 14.84 15.84 16.83 17.83 18.82 19.82
8.86 9.86 10.85 11.85 12.85 13.85 14.85 15.84 16.84 17.83 18.83 19.83
8.86 9.86 10.86 11.86 12.85 13.85 14.85 15.85 16.84 17.84 18.84 19.83
8.87 9.87 10.86 11.86 12.86 13.86 14.86 15.85 16.85 17.84 18.84 19.84
8.87 9.87 10.87 11.87 12.86 13.86 14.86 15.86 16.85 17.85 18.85 19.84
8.88 9.88 10.87 11.87 12.87 13.87 14.87 15.86 16.86 17.86 18.85 19.85
8.88 9.88 10.88 11.88 12.87 13.87 14.87 15.87 16.86 17.86 18.86 19.86
8.89 9.89 10.88 11.88 12.88 13.88 14.88 15.87 16.87 17.87 18.86 19.86
8.89 9.89 10.89 11.89 12.88 13.88 14.88 15.88 16.88 17.87 18.87 19.87
8.90 9.90 10.89 11.89 12.89 13.89 14.89 15.88 16.88 17.88 18.88 19.87
8.90 9.90 10.90 11.90 12.89 13.89 14.89 15.89 16.89 17.88 18.88 19.88
8.91 9.91 10.90 11.90 12.90 13.90 14.90 15.89 16.89 17.89 18.89 19.89
8.91 9.91 10.91 11.91 12.90 13.90 14.90 15.90 16.90 17.90 18.89 19.89
8.92 9.92 10.91 11.91 12.91 13.91 14.91 15.90 16.90 17.90 18.90 19.90
8.92 9.92 10.92 11.92 12.91 13.91 14.91 15.91 16.91 17.91 18.91 19.90
8.93 9.93 10.92 11.92 12.92 13.92 14.92 15.91 16.91 17.91 18.91 19.91
8.93 9.93 10.93 11.93 12.92 13.92 14.92 15.92 16.92 17.92 18.92 19.92
8.94 9.94 10.93 11.93 12.93 13.93 14.93 15.92 16.92 17.92 18.92 19.92
8.94 9.94 10.94 11.94 12.93 13.93 14.93 15.93 16.93 17.93 18.93 19.93
8.95 9.95 10.94 11.94 12.94 13.94 14.94 15.93 16.93 17.93 18.93 19.93
8.95 9.95 10.95 11.95 12.94 13.94 14.94 15.94 16.94 17.94 18.94 19.94
8.96 9.96 10.95 11.95 12.95 13.95 14.95 15.95 16.95 17.95 18.95 19.95
8.96 9.96 10.96 11.96 12.96 13.95 14.95 15.95 16.95 17.95 18.95 19.95
8.97 9.97 10.96 11.96 12.96 13.96 14.96 15.96 16.96 17.96 18.96 19.96
8.97 9.97 10.97 11.97 12.97 13.97 14.96 15.96 16.96 17.96 18.96 19.96
8.98 9.98 10.97 11.97 12.97 13.97 14.97 15.97 16.97 17.97 18.97 19.97
8.98 9.98 10.98 11.98 12.98 13.98 14.98 15.98 16.98 17.98 18.98 19.98
8.99 9.99 10.98 11.98 12.98 13.98 14.98 15.98 16.98 17.98 18.98 19.98
8.99 9.99 10.99 11.99 12.99 13.99 14.99 15.99 16.99 17.99 18.99 19.99
9.00 10.00 10.99 11.99 12.99 13.99 14.99 15.99 16.99 17.99 18.99 19.99
Temperature-corrected brix (°Bx)
Observed brix
21.00 22.00 23.00 24.00 25.00 26.00
20.72 21.71 22.71 23.70 24.70 25.70
20.72 21.72 22.71 23.71 24.71 25.70
20.73 21.72 22.72 23.71 24.71 25.71
20.73 21.73 22.72 23.72 24.72 25.71
20.74 21.73 22.73 23.72 24.72 25.72
20.74 21.74 22.73 23.73 24.73 25.72
20.75 21.74 22.74 23.73 24.73 25.73
20.75 21.75 22.74 23.74 24.74 25.73
20.76 21.75 22.75 23.74 24.74 25.74
20.76 21.76 22.75 23.75 24.75 25.74
20.77 21.76 22.76 23.75 24.75 25.75
20.77 21.77 22.76 23.76 24.76 25.75
20.78 21.77 22.77 23.77 24.76 25.76
20.78 21.78 22.77 23.77 24.77 25.77
20.79 21.78 22.78 23.78 24.77 25.77
20.79 21.79 22.79 23.78 24.78 25.78
20.80 21.79 22.79 23.79 24.79 25.78
20.80 21.80 22.80 23.79 24.79 25.79
20.81 21.81 22.80 23.80 24.80 25.80
20.81 21.81 22.81 23.81 24.80 25.80
20.82 21.82 22.81 23.81 24.81 25.81
20.82 21.82 22.82 23.82 24.82 25.81
20.83 21.83 22.83 23.82 24.82 25.82
20.84 21.83 22.83 23.83 24.83 25.83
20.84 21.84 22.84 23.84 24.83 25.83
20.85 21.85 22.84 23.84 24.84 25.84
20.85 21.85 22.85 23.85 24.85 25.85
20.86 21.86 22.86 23.85 24.85 25.85
20.87 21.86 22.86 23.86 24.86 25.86
20.87 21.87 22.87 23.87 24.86 25.86
20.88 21.88 22.87 23.87 24.87 25.87
20.88 21.88 22.88 23.88 24.88 25.88
20.89 21.89 22.89 23.89 24.88 25.88
20.90 21.90 22.89 23.89 24.89 25.89
20.90 21.90 22.90 23.90 24.90 25.90
20.91 21.91 22.91 23.91 24.91 25.90
20.92 21.91 22.91 23.91 24.91 25.91
20.92 21.92 22.92 23.92 24.92 25.92
20.93 21.93 22.93 23.93 24.93 25.92
20.93 21.93 22.93 23.93 24.93 25.93
20.94 21.94 22.94 23.94 24.94 25.94
20.95 21.95 22.95 23.95 24.95 25.94
20.95 21.95 22.95 23.95 24.95 25.95
20.96 21.96 22.96 23.96 24.96 25.96
20.96 21.96 22.96 23.96 24.96 25.96
20.97 21.97 22.97 23.97 24.97 25.97
20.98 21.98 22.98 23.98 24.98 25.98
20.98 21.98 22.98 23.98 24.98 25.98
20.99 21.99 22.99 23.99 24.99 25.99
20.99 21.99 22.99 23.99 24.99 25.99
27.00
26.69
26.70
26.70
26.71
26.71
26.72
26.72
26.73
26.74
26.74
26.75
26.75
26.76
26.76
26.77
26.78
26.78
26.79
26.79
26.80
26.81
26.81
26.82
26.83
26.83
26.84
26.84
26.85
26.86
26.86
26.87
26.88
26.88
26.89
26.90
26.90
26.91
26.92
26.92
26.93
26.94
26.94
26.95
26.96
26.96
26.97
26.97
26.98
26.99
26.99
28.00
27.69
27.69
27.70
27.70
27.71
27.72
27.72
27.73
27.73
27.74
27.74
27.75
27.76
27.76
27.77
27.77
27.78
27.79
27.79
27.80
27.80
27.81
27.82
27.82
27.83
27.84
27.84
27.85
27.86
27.86
27.87
27.88
27.88
27.89
27.90
27.90
27.91
27.91
27.92
27.93
27.93
27.94
27.95
27.95
27.96
27.97
27.97
27.98
27.99
27.99
29.00
28.68
28.69
28.70
28.70
28.71
28.71
28.72
28.72
28.73
28.74
28.74
28.75
28.75
28.76
28.77
28.77
28.78
28.78
28.79
28.80
28.80
28.81
28.82
28.82
28.83
28.84
28.84
28.85
28.86
28.86
28.87
28.88
28.88
28.89
28.89
28.90
28.91
28.91
28.92
28.93
28.93
28.94
28.95
28.95
28.96
28.97
28.97
28.98
28.99
28.99
30.00
29.68
29.69
29.69
29.70
29.70
29.71
29.72
29.72
29.73
29.73
29.74
29.75
29.75
29.76
29.76
29.77
29.78
29.78
29.79
29.79
29.80
29.81
29.81
29.82
29.83
29.84
29.84
29.85
29.86
29.86
29.87
29.88
29.88
29.89
29.89
29.90
29.91
29.91
29.92
29.92
29.93
29.94
29.94
29.95
29.96
29.97
29.97
29.98
29.99
29.99
31.00
30.68
30.68
30.69
30.70
30.70
30.71
30.71
30.72
30.73
30.73
30.74
30.74
30.75
30.76
30.76
30.77
30.78
30.78
30.79
30.79
30.80
30.81
30.81
30.82
30.83
30.83
30.84
30.85
30.85
30.86
30.87
30.87
30.88
30.89
30.89
30.90
30.91
30.91
30.92
30.92
30.93
30.94
30.94
30.95
30.96
30.97
30.97
30.98
30.99
30.99
32.00
31.67
31.68
31.69
31.69
31.70
31.71
31.71
31.72
31.72
31.73
31.74
31.74
31.75
31.75
31.76
31.77
31.77
31.78
31.79
31.79
31.80
31.81
31.81
31.82
31.83
31.83
31.84
31.85
31.85
31.86
31.87
31.87
31.88
31.89
31.89
31.90
31.90
31.91
31.92
31.92
31.93
31.94
31.94
31.95
31.96
31.96
31.97
31.98
31.99
31.99
33.00
32.67
32.68
32.68
32.69
32.70
32.70
32.71
32.71
32.72
32.73
32.73
32.74
32.75
32.75
32.76
32.77
32.77
32.78
32.78
32.79
32.80
32.80
32.81
32.82
32.82
32.83
32.84
32.85
32.85
32.86
32.87
32.87
32.88
32.89
32.89
32.90
32.90
32.91
32.91
32.92
32.93
32.93
32.94
32.95
32.96
32.96
32.97
32.98
32.99
32.99
34.00
33.67
33.67
33.68
33.69
33.69
33.70
33.71
33.71
33.72
33.73
33.73
33.74
33.74
33.75
33.76
33.76
33.77
33.78
33.78
33.79
33.79
33.80
33.81
33.82
33.82
33.83
33.84
33.85
33.85
33.86
33.87
33.87
33.88
33.88
33.89
33.90
33.90
33.91
33.91
33.92
33.92
33.93
33.94
33.95
33.95
33.96
33.97
33.98
33.98
33.99
35.00
34.67
34.68
34.68
34.69
34.69
34.70
34.71
34.71
34.72
34.72
34.73
34.74
34.74
34.75
34.76
34.77
34.77
34.78
34.79
34.79
34.80
34.81
34.81
34.82
34.82
34.83
34.84
34.84
34.85
34.85
34.86
34.87
34.87
34.88
34.89
34.90
34.90
34.91
34.92
34.92
34.93
34.94
34.94
34.95
34.96
34.97
34.97
34.98
34.99
34.99
40.00
39.66
39.67
39.67
39.68
39.68
39.69
39.70
39.70
39.71
39.71
39.72
39.73
39.73
39.74
39.75
39.76
39.76
39.77
39.78
39.78
39.79
39.80
39.80
39.81
39.82
39.83
39.83
39.84
39.85
39.85
39.86
39.87
39.87
39.88
39.89
39.90
39.90
39.91
39.92
39.92
39.93
39.94
39.94
39.95
39.96
39.97
39.97
39.98
39.99
39.99
45.00
44.64
44.65
44.66
44.66
44.67
44.68
44.69
44.70
44.70
44.71
44.72
44.73
44.73
44.74
44.75
44.76
44.76
44.77
44.78
44.78
44.79
44.80
44.80
44.81
44.82
44.83
44.83
44.84
44.85
44.85
44.86
44.87
44.87
44.88
44.89
44.90
44.90
44.91
44.92
44.92
44.93
44.94
44.94
44.95
44.96
44.97
44.97
44.98
44.99
44.99
50.00
49.64
49.65
49.65
49.66
49.67
49.68
49.68
49.69
49.70
49.70
49.71
49.72
49.72
49.73
49.74
49.75
49.75
49.76
49.77
49.77
49.78
49.79
49.79
49.80
49.81
49.82
49.82
49.83
49.84
49.84
49.85
49.86
49.86
49.87
49.88
49.89
49.89
49.90
49.91
49.91
49.92
49.93
49.94
49.94
49.95
49.96
49.97
49.98
49.98
49.99
55.00
54.63
54.64
54.64
54.65
54.66
54.67
54.67
54.68
54.69
54.69
54.70
54.71
54.71
54.72
54.73
54.74
54.74
54.75
54.76
54.76
54.77
54.78
54.79
54.79
54.80
54.81
54.82
54.83
54.83
54.84
54.85
54.86
54.86
54.87
54.88
54.89
54.89
54.90
54.91
54.91
54.92
54.93
54.94
54.94
54.95
54.96
54.97
54.98
54.98
54.99
60.00
59.62
59.63
59.63
59.64
59.65
59.66
59.66
59.67
59.68
59.68
59.69
59.70
59.71
59.71
59.72
59.73
59.74
59.75
59.75
59.76
59.77
59.78
59.79
59.79
59.80
59.81
59.82
59.83
59.83
59.84
59.85
59.86
59.86
59.87
59.88
59.89
59.89
59.90
59.91
59.91
59.92
59.93
59.94
59.94
59.95
59.96
59.97
59.98
59.98
59.99
Page 22 of 25
65.00
64.62
64.63
64.63
64.64
64.65
64.66
64.66
64.67
64.68
64.68
64.69
64.70
64.70
64.71
64.72
64.73
64.73
64.74
64.75
64.75
64.76
64.77
64.78
64.78
64.79
64.80
64.81
64.82
64.82
64.83
64.84
64.85
64.86
64.86
64.87
64.88
64.89
64.90
64.90
64.91
64.92
64.93
64.94
64.94
64.95
64.96
64.97
64.98
64.98
64.99
70.00
69.61
69.62
69.62
69.63
69.64
69.65
69.65
69.66
69.67
69.67
69.68
69.69
69.70
69.70
69.71
69.72
69.73
69.74
69.74
69.75
69.76
69.77
69.78
69.78
69.79
69.80
69.81
69.82
69.82
69.83
69.84
69.85
69.86
69.86
69.87
69.88
69.89
69.90
69.90
69.91
69.92
69.93
69.94
69.94
69.95
69.96
69.97
69.98
69.98
69.99
True
temp
(°C)
20.1
20.2
20.3
20.4
20.5
20.6
20.7
20.8
20.9
21.0
21.1
21.2
21.3
21.4
21.5
21.6
21.7
21.8
21.9
22.0
22.1
22.2
22.3
22.4
22.5
22.6
22.7
22.8
22.9
23.0
23.1
23.2
23.3
23.4
23.5
23.6
23.7
23.8
23.9
24.0
24.1
24.2
24.3
24.4
24.5
24.6
24.7
24.8
24.9
25.0
0.00
0.00
0.01
0.01
0.02
0.02
0.02
0.03
0.03
0.04
0.04
0.05
0.05
0.06
0.06
0.07
0.08
0.08
0.09
0.09
0.10
0.11
0.11
0.12
0.12
0.13
0.14
0.14
0.15
0.15
0.16
0.17
0.17
0.18
0.18
0.19
0.19
0.20
0.20
0.21
0.21
0.22
0.22
0.23
0.23
0.24
0.25
0.25
0.26
0.26
0.27
5.00
5.01
5.01
5.02
5.02
5.03
5.03
5.04
5.04
5.05
5.05
5.06
5.06
5.07
5.07
5.08
5.08
5.09
5.09
5.10
5.10
5.11
5.11
5.12
5.12
5.13
5.14
5.14
5.15
5.15
5.16
5.17
5.17
5.18
5.18
5.19
5.20
5.20
5.21
5.21
5.22
5.23
5.23
5.24
5.24
5.25
5.26
5.26
5.27
5.27
5.28
6.00
6.01
6.01
6.02
6.02
6.03
6.03
6.04
6.04
6.05
6.05
6.06
6.06
6.07
6.07
6.08
6.08
6.09
6.09
6.10
6.10
6.11
6.11
6.12
6.13
6.13
6.14
6.14
6.15
6.16
6.16
6.17
6.17
6.18
6.19
6.19
6.20
6.20
6.21
6.22
6.22
6.23
6.23
6.24
6.25
6.25
6.26
6.27
6.27
6.28
6.28
NITP 17.1, v1
7.00
7.01
7.01
7.02
7.02
7.03
7.03
7.04
7.04
7.05
7.05
7.06
7.06
7.07
7.07
7.08
7.08
7.09
7.09
7.10
7.10
7.11
7.12
7.12
7.13
7.13
7.14
7.15
7.15
7.16
7.16
7.17
7.18
7.18
7.19
7.19
7.20
7.21
7.21
7.22
7.22
7.23
7.24
7.24
7.25
7.26
7.26
7.27
7.28
7.28
7.29
8.00
8.01
8.01
8.02
8.02
8.03
8.03
8.04
8.04
8.05
8.06
8.06
8.07
8.07
8.08
8.08
8.09
8.09
8.10
8.10
8.11
8.11
8.12
8.12
8.13
8.14
8.14
8.15
8.15
8.16
8.17
8.17
8.18
8.18
8.19
8.20
8.20
8.21
8.21
8.22
8.23
8.23
8.24
8.25
8.25
8.26
8.27
8.27
8.28
8.29
8.29
9.00
9.01
9.01
9.02
9.02
9.03
9.03
9.04
9.05
9.05
9.06
9.06
9.07
9.07
9.08
9.08
9.09
9.09
9.10
9.10
9.11
9.11
9.12
9.13
9.13
9.14
9.14
9.15
9.16
9.16
9.17
9.17
9.18
9.19
9.19
9.20
9.20
9.21
9.22
9.22
9.23
9.23
9.24
9.25
9.26
9.26
9.27
9.28
9.28
9.29
9.30
10.00
10.01
10.01
10.02
10.02
10.03
10.04
10.04
10.05
10.05
10.06
10.07
10.07
10.08
10.08
10.09
10.09
10.10
10.10
10.11
10.11
10.12
10.12
10.13
10.13
10.14
10.15
10.15
10.16
10.16
10.17
10.18
10.18
10.19
10.19
10.20
10.21
10.21
10.22
10.22
10.23
10.24
10.24
10.25
10.26
10.27
10.27
10.28
10.29
10.29
10.30
11.00
11.01
11.01
11.02
11.02
11.03
11.04
11.04
11.05
11.05
11.06
11.07
11.07
11.08
11.08
11.09
11.09
11.10
11.10
11.11
11.11
11.12
11.12
11.13
11.14
11.14
11.15
11.15
11.16
11.16
11.17
11.18
11.18
11.19
11.19
11.20
11.21
11.21
11.22
11.23
11.23
11.24
11.25
11.25
11.26
11.27
11.27
11.28
11.29
11.30
11.30
12.00
12.01
12.01
12.02
12.02
12.03
12.04
12.04
12.05
12.05
12.06
12.07
12.07
12.08
12.08
12.09
12.09
12.10
12.10
12.11
12.11
12.12
12.13
12.13
12.14
12.14
12.15
12.15
12.16
12.16
12.17
12.18
12.18
12.19
12.20
12.20
12.21
12.21
12.22
12.23
12.23
12.24
12.25
12.26
12.26
12.27
12.28
12.28
12.29
12.30
12.30
13.00
13.01
13.01
13.02
13.02
13.03
13.04
13.04
13.05
13.05
13.06
13.07
13.07
13.08
13.08
13.09
13.09
13.10
13.10
13.11
13.12
13.12
13.13
13.13
13.14
13.14
13.15
13.15
13.16
13.16
13.17
13.18
13.18
13.19
13.20
13.20
13.21
13.22
13.22
13.23
13.24
13.24
13.25
13.26
13.26
13.27
13.28
13.29
13.29
13.30
13.31
14.00
14.01
14.01
14.02
14.02
14.03
14.04
14.04
14.05
14.05
14.06
14.07
14.07
14.08
14.08
14.09
14.09
14.10
14.11
14.11
14.12
14.12
14.13
14.13
14.14
14.14
14.15
14.15
14.16
14.16
14.17
14.18
14.18
14.19
14.20
14.20
14.21
14.22
14.22
14.23
14.24
14.25
14.25
14.26
14.27
14.27
14.28
14.29
14.29
14.30
14.31
15.00
15.01
15.01
15.02
15.02
15.03
15.04
15.04
15.05
15.05
15.06
15.07
15.07
15.08
15.08
15.09
15.10
15.10
15.11
15.11
15.12
15.13
15.13
15.14
15.14
15.15
15.15
15.16
15.16
15.17
15.17
15.18
15.18
15.19
15.20
15.21
15.21
15.22
15.23
15.23
15.24
15.25
15.25
15.26
15.27
15.28
15.28
15.29
15.30
15.30
15.31
16.00
16.01
16.01
16.02
16.02
16.03
16.04
16.04
16.05
16.05
16.06
16.07
16.07
16.08
16.08
16.09
16.10
16.10
16.11
16.11
16.12
16.13
16.13
16.14
16.14
16.15
16.15
16.16
16.16
16.17
16.17
16.18
16.19
16.20
16.20
16.21
16.22
16.22
16.23
16.24
16.24
16.25
16.26
16.26
16.27
16.28
16.28
16.29
16.30
16.31
16.31
17.00
17.01
17.01
17.02
17.02
17.03
17.04
17.04
17.05
17.05
17.06
17.07
17.07
17.08
17.08
17.09
17.10
17.10
17.11
17.11
17.12
17.13
17.13
17.14
17.14
17.15
17.15
17.16
17.17
17.17
17.18
17.19
17.19
17.20
17.21
17.21
17.22
17.23
17.23
17.24
17.25
17.25
17.26
17.27
17.27
17.28
17.29
17.29
17.30
17.31
17.31
18.00
18.01
18.01
18.02
18.02
18.03
18.04
18.04
18.05
18.05
18.06
18.07
18.07
18.08
18.08
18.09
18.10
18.10
18.11
18.11
18.12
18.13
18.13
18.14
18.14
18.15
18.16
18.16
18.17
18.18
18.18
18.19
18.20
18.20
18.21
18.22
18.22
18.23
18.24
18.25
18.25
18.26
18.26
18.27
18.28
18.28
18.29
18.30
18.30
18.31
18.32
19.00
19.01
19.01
19.02
19.02
19.03
19.04
19.04
19.05
19.05
19.06
19.07
19.07
19.08
19.08
19.09
19.10
19.10
19.11
19.11
19.12
19.13
19.13
19.14
19.15
19.15
19.16
19.17
19.17
19.18
19.19
19.19
19.20
19.21
19.21
19.22
19.23
19.24
19.24
19.25
19.26
19.26
19.27
19.27
19.28
19.29
19.29
19.30
19.31
19.31
19.32
20.00
20.01
20.01
20.02
20.02
20.03
20.04
20.04
20.05
20.05
20.06
20.07
20.07
20.08
20.08
20.09
20.10
20.10
20.11
20.11
20.12
20.13
20.13
20.14
20.15
20.16
20.16
20.17
20.18
20.18
20.19
20.20
20.20
20.21
20.22
20.23
20.23
20.24
20.25
20.25
20.26
20.27
20.27
20.28
20.28
20.29
20.30
20.30
20.31
20.31
20.32
Temperature-corrected brix (°Bx)
Observed brix
21.00 22.00 23.00 24.00 25.00 26.00
21.01 22.01 23.01 24.01 25.01 26.01
21.01 22.01 23.01 24.01 25.01 26.01
21.02 22.02 23.02 24.02 25.02 26.02
21.02 22.03 23.03 24.03 25.03 26.03
21.03 22.03 23.03 24.03 25.04 26.04
21.04 22.04 23.04 24.04 25.04 26.04
21.04 22.04 23.05 24.05 25.05 26.05
21.05 22.05 23.05 24.05 25.06 26.06
21.06 22.06 23.06 24.06 25.06 26.06
21.06 22.06 23.07 24.07 25.07 26.07
21.07 22.07 23.07 24.07 25.08 26.08
21.07 22.08 23.08 24.08 25.08 26.08
21.08 22.08 23.08 24.09 25.09 26.09
21.09 22.09 23.09 24.09 25.09 26.09
21.09 22.09 23.10 24.10 25.10 26.10
21.10 22.10 23.10 24.10 25.11 26.11
21.10 22.11 23.11 24.11 25.11 26.11
21.11 22.11 23.11 24.12 25.12 26.12
21.12 22.12 23.12 24.12 25.12 26.13
21.12 22.12 23.13 24.13 25.13 26.13
21.13 22.13 23.13 24.14 25.14 26.14
21.14 22.14 23.14 24.14 25.14 26.15
21.14 22.15 23.15 24.15 25.15 26.15
21.15 22.15 23.15 24.16 25.16 26.16
21.16 22.16 23.16 24.16 25.17 26.17
21.16 22.17 23.17 24.17 25.17 26.17
21.17 22.17 23.18 24.18 25.18 26.18
21.18 22.18 23.18 24.18 25.19 26.19
21.19 22.19 23.19 24.19 25.19 26.20
21.19 22.19 23.20 24.20 25.20 26.20
21.20 22.20 23.20 24.21 25.21 26.21
21.21 22.21 23.21 24.21 25.21 26.22
21.21 22.22 23.22 24.22 25.22 26.22
21.22 22.22 23.22 24.23 25.23 26.23
21.23 22.23 23.23 24.23 25.24 26.24
21.23 22.24 23.24 24.24 25.24 26.24
21.24 22.24 23.25 24.25 25.25 26.25
21.25 22.25 23.25 24.25 25.26 26.26
21.26 22.26 23.26 24.26 25.26 26.27
21.26 22.26 23.27 24.27 25.27 26.27
21.27 22.27 23.27 24.27 25.28 26.28
21.27 22.28 23.28 24.28 25.28 26.29
21.28 22.28 23.29 24.29 25.29 26.29
21.29 22.29 23.29 24.30 25.30 26.30
21.29 22.30 23.30 24.30 25.31 26.31
21.30 22.30 23.31 24.31 25.31 26.31
21.31 22.31 23.31 24.32 25.32 26.32
21.31 22.32 23.32 24.32 25.33 26.33
21.32 22.32 23.33 24.33 25.33 26.34
21.32 22.33 23.33 24.34 25.34 26.34
27.00
27.01
27.01
27.02
27.03
27.04
27.04
27.05
27.06
27.06
27.07
27.08
27.08
27.09
27.10
27.10
27.11
27.11
27.12
27.13
27.13
27.14
27.15
27.16
27.16
27.17
27.18
27.18
27.19
27.20
27.20
27.21
27.22
27.23
27.23
27.24
27.25
27.25
27.26
27.27
27.27
27.28
27.29
27.30
27.30
27.31
27.32
27.32
27.33
27.34
27.34
28.00
28.01
28.01
28.02
28.03
28.04
28.04
28.05
28.06
28.06
28.07
28.08
28.08
28.09
28.10
28.10
28.11
28.12
28.12
28.13
28.14
28.14
28.15
28.16
28.16
28.17
28.18
28.19
28.19
28.20
28.21
28.21
28.22
28.23
28.23
28.24
28.25
28.26
28.26
28.27
28.28
28.28
28.29
28.30
28.30
28.31
28.32
28.33
28.33
28.34
28.35
29.00
29.01
29.01
29.02
29.03
29.04
29.04
29.05
29.06
29.06
29.07
29.08
29.08
29.09
29.10
29.10
29.11
29.12
29.12
29.13
29.14
29.15
29.15
29.16
29.17
29.17
29.18
29.19
29.19
29.20
29.21
29.22
29.22
29.23
29.24
29.24
29.25
29.26
29.26
29.27
29.28
29.29
29.29
29.30
29.31
29.31
29.32
29.33
29.33
29.34
29.35
30.00
30.01
30.01
30.02
30.03
30.04
30.04
30.05
30.06
30.06
30.07
30.08
30.08
30.09
30.10
30.11
30.11
30.12
30.13
30.13
30.14
30.15
30.15
30.16
30.17
30.18
30.18
30.19
30.20
30.20
30.21
30.22
30.22
30.23
30.24
30.25
30.25
30.26
30.27
30.27
30.28
30.29
30.29
30.30
30.31
30.32
30.32
30.33
30.34
30.34
30.35
31.00
31.01
31.01
31.02
31.03
31.04
31.04
31.05
31.06
31.06
31.07
31.08
31.08
31.09
31.10
31.11
31.11
31.12
31.13
31.13
31.14
31.15
31.15
31.16
31.17
31.18
31.18
31.19
31.20
31.20
31.21
31.22
31.22
31.23
31.24
31.25
31.25
31.26
31.27
31.27
31.28
31.29
31.30
31.30
31.31
31.32
31.32
31.33
31.34
31.35
31.35
32.00
32.01
32.01
32.02
32.03
32.04
32.04
32.05
32.06
32.06
32.07
32.08
32.08
32.09
32.10
32.11
32.11
32.12
32.13
32.13
32.14
32.15
32.16
32.16
32.17
32.18
32.18
32.19
32.20
32.21
32.21
32.22
32.23
32.23
32.24
32.25
32.26
32.26
32.27
32.28
32.28
32.29
32.30
32.31
32.31
32.32
32.33
32.33
32.34
32.35
32.35
33.00
33.01
33.01
33.02
33.03
33.04
33.04
33.05
33.06
33.06
33.07
33.08
33.08
33.09
33.10
33.11
33.11
33.12
33.13
33.14
33.14
33.15
33.16
33.17
33.17
33.18
33.19
33.19
33.20
33.21
33.21
33.22
33.23
33.24
33.24
33.25
33.26
33.26
33.27
33.28
33.29
33.29
33.30
33.31
33.31
33.32
33.33
33.34
33.34
33.35
33.36
34.00
34.01
34.01
34.02
34.03
34.04
34.04
34.05
34.06
34.06
34.07
34.08
34.09
34.09
34.10
34.11
34.12
34.12
34.13
34.14
34.15
34.15
34.16
34.17
34.17
34.18
34.19
34.20
34.20
34.21
34.22
34.22
34.23
34.24
34.24
34.25
34.26
34.27
34.27
34.28
34.29
34.30
34.30
34.31
34.32
34.32
34.33
34.34
34.34
34.35
34.36
35.00
35.01
35.01
35.02
35.03
35.04
35.04
35.05
35.06
35.06
35.07
35.08
35.08
35.09
35.10
35.11
35.11
35.12
35.13
35.13
35.14
35.15
35.15
35.16
35.17
35.18
35.18
35.19
35.20
35.20
35.21
35.22
35.23
35.23
35.24
35.25
35.26
35.27
35.27
35.28
35.29
35.30
35.30
35.31
35.32
35.33
35.33
35.34
35.35
35.35
35.36
40.00
40.01
40.01
40.02
40.03
40.04
40.04
40.05
40.06
40.06
40.07
40.08
40.08
40.09
40.10
40.11
40.11
40.12
40.13
40.13
40.14
40.15
40.16
40.16
40.17
40.18
40.19
40.20
40.20
40.21
40.22
40.23
40.24
40.24
40.25
40.26
40.27
40.28
40.28
40.29
40.30
40.31
40.32
40.32
40.33
40.34
40.35
40.36
40.36
40.37
40.38
45.00
45.01
45.02
45.02
45.03
45.04
45.05
45.06
45.06
45.07
45.08
45.09
45.09
45.10
45.11
45.12
45.12
45.13
45.14
45.14
45.15
45.16
45.17
45.17
45.18
45.19
45.20
45.21
45.21
45.22
45.23
45.24
45.25
45.25
45.26
45.27
45.28
45.29
45.29
45.30
45.31
45.32
45.32
45.33
45.34
45.35
45.35
45.36
45.37
45.37
45.38
50.00
50.01
50.02
50.02
50.03
50.04
50.05
50.06
50.06
50.07
50.08
50.09
50.10
50.10
50.11
50.12
50.13
50.14
50.14
50.15
50.16
50.17
50.18
50.18
50.19
50.20
50.21
50.22
50.22
50.23
50.24
50.25
50.26
50.26
50.27
50.28
50.29
50.30
50.30
50.31
50.32
50.33
50.33
50.34
50.35
50.36
50.36
50.37
50.38
50.38
50.39
55.00
55.01
55.02
55.02
55.03
55.04
55.05
55.06
55.06
55.07
55.08
55.09
55.10
55.10
55.11
55.12
55.13
55.14
55.14
55.15
55.16
55.17
55.18
55.18
55.19
55.20
55.21
55.22
55.22
55.23
55.24
55.25
55.26
55.26
55.27
55.28
55.29
55.30
55.30
55.31
55.32
55.33
55.33
55.34
55.35
55.36
55.36
55.37
55.38
55.38
55.39
60.00
60.01
60.02
60.02
60.03
60.04
60.05
60.06
60.06
60.07
60.08
60.09
60.10
60.10
60.11
60.12
60.13
60.14
60.14
60.15
60.16
60.17
60.18
60.18
60.19
60.20
60.21
60.22
60.22
60.23
60.24
60.25
60.26
60.26
60.27
60.28
60.29
60.30
60.30
60.31
60.32
60.33
60.34
60.34
60.35
60.36
60.37
60.38
60.38
60.39
60.40
Page 23 of 25
65.00
65.01
65.02
65.02
65.03
65.04
65.05
65.06
65.06
65.07
65.08
65.09
65.10
65.10
65.11
65.12
65.13
65.14
65.14
65.15
65.16
65.17
65.18
65.18
65.19
65.20
65.21
65.22
65.22
65.23
65.24
65.25
65.26
65.26
65.27
65.28
65.29
65.30
65.30
65.31
65.32
65.33
65.34
65.34
65.35
65.36
65.37
65.38
65.38
65.39
65.40
70.00
70.01
70.02
70.03
70.04
70.05
70.05
70.06
70.07
70.08
70.09
70.10
70.10
70.11
70.12
70.13
70.13
70.14
70.15
70.15
70.16
70.17
70.18
70.18
70.19
70.20
70.21
70.22
70.22
70.23
70.24
70.25
70.26
70.26
70.27
70.28
70.29
70.30
70.30
70.31
70.32
70.33
70.33
70.34
70.35
70.36
70.36
70.37
70.38
70.38
70.39
Appendix E: Tables of mass % solute and density at 20° C for aqueous test liquids (Informative)
Estimate the brix of a test liquid of known concentration by matching up its density
(indicated in clauses E.1, E.2 and E.3) with the closest value in the sucrose table
(see clause E.4).
For example, if a 20 % NaCl solution is prepared, the density should be 1.1478 g/
cm3. This value is closest to 1147.877 kg/ m 3- - which is equivalent to 34.4 °Bx in
the table for sucrose.
E.1 Sodium chloride (NaCl)
Mass %
0.5
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
Density (g/ cm3)
1.0018
1.0053
1.0125
1.0196
1.0268
1.0340
1.0413
1.0486
1.0559
1.0633
Mass %
10.0
12.0
14.0
16.0
18.0
20.0
22.0
24.0
26.0
Density (g/ cm3)
1.0707
1.0857
1.1008
1.1162
1.1319
1.1478
1.1640
1.1804
1.1972
E.2 Potassium Iodide (KI)
Mass %
0.5
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
12.0
14.0
NITP 17.1, v1
Density (g/ cm3)
1.0019
1.0059
1.0131
1.0206
1.0282
1.0360
1.0438
1.0517
1.0598
1.0679
1.0762
1.0931
1.1105
Mass %
16.0
18.0
20.0
22.0
24.0
26.0
28.0
30.0
32.0
34.0
36.0
38.0
40.0
Density (g/ cm3)
1.1284
1.1469
1.1659
1.1856
1.2060
1.2270
1.2487
1.2712
1.2944
1.3185
1.3434
1.3692
1.3959
E.3 Sulfuric acid (H2SO4)
Mass %
0.5
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
12.0
14.0
16.0
18.0
20.0
22.0
24.0
26.0
28.0
30.0
32.0
Density (g/ cm3)
1.0016
1.0049
1.0116
1.0183
1.0250
1.0318
1.0385
1.0453
1.0522
1.0591
1.0661
1.0802
1.0947
1.1094
1.1245
1.1398
1.1554
1.1714
1.1872
1.2031
1.2191
1.2353
Mass %
34.0
36.0
38.0
40.0
42.0
44.0
46.0
48.0
50.0
52.0
54.0
56.0
58.0
60.0
70.0
80.0
90.0
92.0
94.0
96.0
98.0
100.0
Density (g/ cm3)
1.2518
1.2685
1.2855
1.3028
1.3205
1.3386
1.3570
1.3759
1.3952
1.4149
1.4351
1.4558
1.4770
1.4987
1.6105
1.7272
1.8144
1.8240
1.8312
1.8355
1.8361
1.8305
E.4 Sucrose
ICUMSA Specification and Standard SPS-4 (1998); Densimetry and tables:
sucrose – official; glucose, fructose and invert sugar – official.
Refer to the General Certificate of Approval 17/0/1 Appendix B for a copy of the
relevant table.
E.5 Reference
D.R. Lide (ed); CRC handbook of chemistry and physics, 87th ed., Taylor and
Francis Group, 2006, Section 8 – Analytical Chemistry, Table 8-53 Concentrative
properties of aqueous solutions.
Page 24 of 25
Appendix F: Meniscus correction (Informative)
F.1 General
Brix hydrometers are conventionally designed to be read from the base of meniscus. Such
hydrometers may be used in opaque liquids. In this case, the reading is taken where the top of the
meniscus appears to meet the stem of the hydrometer. This reading requires adjustment.
When instruments designed to be read from the base of the meniscus are read from the top of the
meniscus, an empirical scale adjustment equation by Langberg is used to calculate the necessary
meniscus correction (MC). This equation is published in AS 2026:2003 which is referenced in General
CoA NMI 17/1/0.
F.2 Meniscus correction (MC) for hydrometer readings in cane juice
The appropriate MC required can be 0.8 – 1.0 kg/m3 in liquids with the same surface tension class
and density as sugar solutions. In cane juice solutions which are typically under 30 °Bx, 0.1 °Bx is
equivalent to 0.42 – 0.47 kg/m3.
The MC of 0.2 °Bx, stated in BSES Method 3 (2001) that is used across sugar mills is consistent with
the metric density MC values in AS 2026:2003 Appendix 5.
NITP 17.1, v1
Page 25 of 25