we use test tube to hold chemicals and heat and chemicals.
Test tube rack is use to hold test tube when they are not in use.
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.
The color tube you use when drawing blood for a lab test depends on the type of test you are running. For a Na blood test you would use a red tiger strip tube.
test tube