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!
Test tubes are used for heating small amounts of liquid. Test tube rack keeps the test tubes while not in use.
---Co0leTs24
no.
No. A ringstand is a stand with a base with a large pole sticking out of it. that you can attach rings to. A wire mesh is usually placed on the ring for setting a beaker to be heated. A test tube clamp can be attached to the ring stand to hold a test tube, for say, heating it in a hot water bath.
Test tube brush=use for cleaning test tubes
It is a clamp that holds a test tube -- for instance to hold a test tube while heating it without getting burned. It is made from a thick piece of metal wire that is shaped into a spring-loaded clamp to securely hold a test tube.Note the difference between a test tube clamp, and a test tube rack. A clamp is a way to hold a single test tube while heating the contents inside without actually touching the test tube itself. A rack is instead used to hold many test tubes at once in an upright position. See the Related Questions links below for more information on test tube racks.
Assuming you're talking about a wooden or metal 'rack' which is capable of holding a few test-tubes. They are simply a safe way to allow test tubes to stand upright without falling over. A hot test tube, or one holding corrosive chemicals - is safer supported by a rack - than being held in someone's hand !
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.
To hold test tubes when collecting powders or observing it :)
no.
A test tube rack is used to hold test tubes so they don't fall over while you're using them.