to clean the testube
The testube holds liquids and other scientific substances. It can be held between two metal prongs known as a testube holder. Often, a testube holder raises the testube over a bunsen burner (an open flame).
... is to hold testtubes in upright position.
muli gaga
To brush oil or egg on top of items
test tube rock
it is a testube holder
Do you mean a testube?
dont care ;0
you use it to clean the test tube outUm... to clean test tubes! Test tubes are used very often to perform experiments on a small scale, hence they need to be cleaned quite often.it is used for cleaning the testube.
the function is o clean the laboratory equipment
Yes, they are made out of glass and so will break if thy are dropped
pink rubber top testube for blood grouping