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 :)
It is a tube rack consisting of two waffer cassettes and usually made from metal. The microtubes can be placed between the two cassettes to keep the tube lips tightly closed during incubation in the boiling water.
Test tubes, beakers and pipettes, among other things, are used to hold small amounts of liquid in a science lab.
http://staff.tuhsd.k12.az.us/gfoster/standard/labeq.htm or http://www.cartage.org.lb/en/themes/Sciences/Chemistry/Analyticalchemistry/LabEquipment/LabEquipment.htm will help
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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 upright to keep them from spilling.
A test tube rack is used to hold test tubes upright to keep them from spilling.
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.
A test tube rack.
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 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!
To hold test tubes when collecting powders or observing it :)
A test tube rack is used to hold test tubes so they don't fall over while you're using them.
no.