The tools for reacting substances consist of:
1. Test tube
a. Description
Test tube lab is one tool that is generally made of glass / glass, usually 75x 10 mm, 4 mL,
sometimes 100 x 12 mm, 8 mL. Test tube has cylindrical shape with the open end on the bottom
while blunt with uneven shaped base but rounded. So, test tube should be put to a special test
tube rack is made of wood, intended that the test tube is not easy to fall due to shocks.
Test tube made of clear glass with the aim that the chemical reaction can be seen
clearly. In addition, the test tubes are also usually made of refractory (silicate glass) for the
reaction - a reaction that uses fire to do without having to remove chemicals that have been
filled in the tube. Close the test tubes can be cotton, metal lid, plastic lid or aluminum foil.
b. Function
1. Used to perform a chemical reaction on a small scale.
2. Test tubes used for bio-chemical tests. Test tubes can be filled solid or liquid media.
c. Procedure to use test tube
Examples of the use of test tubes in heating substances
1. Holding tube with wooden tongs
2. Heat over low heat, to move a motion tubes back and forth, so as not to break the reaction
tube when heated over coals.
3. Directs mouth test tube towards the open, so any time in case of fluid spurting out of his test
tube is not exposed to other people.
d.
Tips To Take Care Test Tube
After the test tubes are used, the test tube should be washed and dried. If the remaining lime or
crust, then cleaned with cotton wrapped stirrers and moistened with liquid acid. Then, rub it on the
inside of the tube, then rinse with water and dried.
e.
How to Get Test Tube
Test tubes can be bought in store chemicals at UD. Aneka Kimia Jember
Address: Jl Sultan Agung 6, Kepatihan, Kaliwates
The price of tiny test tubes with Iwaki Pyrex brand Rp.7500 price, and the price big tube is Rp.8500
with Iwaki Pyrex brand
2. Erlenmeyer Flasks
A. DESCRIPTION
Erlenmeyer flask in the form of glass diameter gets smaller as you go up the scale along the walls.
Erlenmeyer flask sizes varied among others (25, 50, 100, 200, 250, 300, 500, 1000, 2000, 3000, 5000)
ml.
B. FUNCTION
This tool is used to store and heat the solution, also used as placeholders filtrate screening results.
Placeholders titrant in the titration process for a small neck so easily shaken without spilling the
solution in it.
E. How To Use
During the process of heating a solution of erlenmeyer placed at the foot of the three screens that
have been installed, because it is a flat surface elenmeyer then be used for process heating so it
does not spill. In erlenmeyer filtering process is put in place then there is a flat filter paper on top of
it so erlenmeyer as placeholders fitrat. In the titration erlenmeyer in place at the bottom of the
burette.
F. How To Take Care Erlenmeyer
To take care the Erlenmeyer tube is wash and dry it after use.
G. How To Get The Enlenmeyer Tube
Erlenmeyer tube can be encountered in the chemical store at UD. Aneka Kimia Jember
Address: Jl Sultan Agung 6, Kepatihan, Kaliwates, with varying prices, namely: starting from Rp.
42,000 to Rp. 185 000 with Iwaki Pyrex brand.
3. GLASS CUP ( BEAKER GLASS)
A. DESCRIPTIONS
Beaker Glass or glass cup is a container made of borosilicate. The bottom flat and spout allows
this piece of glass is stable on the laboratory bench or hot plate, and easy to pour liquids without
making a mess. Glasses are also easy to clean. Beaker (glass beaker) used for corrosive chemicals
made from PTPE. To prevent contamination or loss of fluids can be used as a watch glass cover.
Glass beaker has particularly varied sizes ranging from 100 ml, 250 ml up to 1 liter.
B. FUNCTIONS
Function beaker Glass (Glass Cup) is to stir, mix and heat liquids. . Beaker can not be used to
measure the volume because the level of precision of the glass beaker to measure volume in
only 10% accuracy.
C. HOW TO TAKE CARE GLASS CUP
How to care for a glass trophy is to always clean up the glass after glass used for the laboratory
that can still be used in a good condition.
D. HOE TO GET GLASS CUP
Beaker can we get in the chemical store UD. Aneka Kimia Jember. Address: Jl Sultan Agung 6,
Kepatihan, Kaliwates, with prices starting from Rp. 28,000 to Rp. 84000