13x100 test tubes are excellent when you need to have larger volume in a test tube. These larger tubes allow more air to touch the sample.
A test tube 13 mm (about half an inch) in diameter and 100 mm (a bit under 4 inches) long.
Test tube rack is use to hold test tube when they are not in use.
we use test tube to hold chemicals and heat and chemicals.
the answer is none
use to hold test tube..
a test tube rock is used to measure liquids
Test tube brush=use for cleaning test tubes
When heating a test tube, you would use a test tube holder. It can also be used to hold/ support pipettes, etc. http://www.answers.com/mt/test-tube-holder
Test tube cleaner is also called a test tube brush. It is use to clean the test tubes. Specifically, the inside part of it.
it is use to hold the test tube
Red
Carbon is settled on the test tube.