Worksheet 2 – Calibrate equipment
Complete the following details:
Name
Name of Instructor
Instructions
To record your answers for the activities and tasks, you will need to:
1) click in the text boxes
2) type your response
When you close the document you will be prompted to save your changes. Save the document to your computer hard drive
or a removable storage device such as a USB drive.
When finished, print it and keep it with the other forms and records. You may be required to submit this document as part
of your evidence of learning for this task. Please check with your instructor or team leader.
Outline a method you would use to calibrate a volumetric flask and/or pipette in your laboratory.
Where are your glassware records kept?
Photocopy a glassware calibration record form and attach it to this worksheet.
Complete the following question.
A laboratory technician, calibrates the fluoride meter on the 24th and 25th of July. The following is an
extract from his laboratory logbook.
Fluoride Calibration
240707
20.5o
250707
20.0 o
Worksheet 2 – Calibrate equipment
122.7/ 80/
122.6/ 78/
-55.81
-55.63
Page 1 of 3
1.
Enter the results accurately into the table below.
2.
Look at the readings for the 1.5g.L1 standard and note the trend (multiple choice
increasing/decreasing/staying steady)
3.
Select an initial course of action from the following list. Write your suggestion into the
comments box for the 25th July.
– Send meter back to the manufacturer
– Make up all new solutions
– Prepare fresh 1.5 mg.L-1 solution
– Perform 1 point calibration
Worksheet 2 – Calibrate equipment
Page 2 of 3
LABORATORY FLUORIDE ION METER CALIBRATION RECORD
Meter
(Make)
Electrode
(Make)
Date of
Calibration
21/07/07
22/07/07
23/07/07
TPS
Meter
(Model #)
ORION
Electrode
(Model #)
Type
(1point or
2Point)
2 point
2 point
2 point
Temp.
(oC)
20.5
20.0
21.0
Worksheet 2 – Calibrate equipment
0.50mg.L-1
F- solution
mV reading
122.7
122.6
121.5
900-1
Meter
(Serial #)
R 1427
9609 BN
Electrode
(serial #)
192 44
1.50mg.L-1
F- solution
mV
reading
86
84
82
Standard
Solution
Concn
Standard
Solution
Reading
Slope
Analyst
Print
Name
Sign
L Tech
-55.48
Lab
Technician
L Tech
-55.13
Lab
Technician
L Tech
-55.90
Lab
Technician
(mV/Decade
)
Comment/Action
Required
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