To hold test tubes when collecting powders or observing it :)
It is a rack made of wood or metal used to keep test tupes organized and steady.
A test tube rack is used to hold test tubes so they don't fall over while you're using them.
To hold the test tubes orderly to easily identify them.
A test tube holder or rack is used in a laboratory to hold or support test tubes containing chemicals or other contents awaiting further operations. Although it is called a test tube holder, it is also used to hold/support pipettes, etc. Since a test tube has a rounded bottom, it cannot stand by itself; the rack is a convenient and necessary piece of laboratory equipment for the storage of test tubes.
test tube is where u keep ur filled or unfilled test tube during experiment.
A test tube rack is used to hold test tubes upright to keep them from spilling.
A test tube rack is used to hold test tubes upright to keep them from spilling.
It is a rack made of wood or metal used to keep test tupes organized and steady.
I think the test tube rack is used to hold any amount of chemical or liquid during an experiment.
used to place the test tube . :D hahaha
Test tube rack is use to hold test tube when they are not in use.
Test tube racks are used to support the test tubes but unlike the test tube holder, it can store the test tubes without anyone who will hold the rack... hope this helps!
A test tube rack.
A test tube rack is used to stand glass test tubes upright in. Glass test tubes have round bottoms, so need a rack to keep them upright. Otherwise, they would fall over and spill their contents.
A test tube is used for many things. It is used to perform experiments as well as measure out certain mL of fluids. The rack itself is used for holding the test tubes if they are hot, need to stay in one place for a long time, or just so you don't have to hold the tube. Hope this helps!
no.
A test tube rack is used to hold test tubes so they don't fall over while you're using them.