A test tube rack.
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!
u can't
to test and hold chemicals in
They are used to hold the tubes when you have to heat them with a reagent in them.
Typically, no. Test tubes are generally smaller than beakers and have less volume. Beakers are designed to hold larger amounts of liquid compared to test tubes.
To hold test tubes. LOL
To hold your test tubes in, or to keep them upright.
Test tubes hold chemicals and are convenient when you need to mix liquids together. They can be used to pour or to hold a solution in order to heat it over a flame.
There are several. Test tubes, flasks etc.
They are called: - Test tubes - Cultural tubes - Sample tubes
To hold test tubes when collecting powders or observing it :)
A test-tube rack is used to hold test tubes upright during experiments or while they are drying. It helps to keep the test tubes organized and prevents them from rolling or spilling. Test-tube racks are commonly used in chemistry labs for various procedures such as mixing, heating, or observing reactions in test tubes.