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.
Test tube rack is use to hold test tube when they are not in use.
To help clean used test tubes.
Different laboratories may use different color codes for test tubes depending on their specific protocols. However, a common color coding for test tubes used in centrifuges is as follows: red for serum tubes, lavender for EDTA tubes, green for heparin tubes, and blue for citrate tubes.
Very simple, place the test tubes in the holder.
13x100 test tubes are excellent when you need to have larger volume in a test tube. These larger tubes allow more air to touch the sample.
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!
tools that the biologist use are microscopes, petri dish, laboratory, test tubes, beakers, and computers tools that the biologist use are microscopes, petri dish, laboratory, test tubes, beakers, and computers
If the test tubes need to be sterile, you would have to autoclave them.
Holding test tubes vertically so that the contents do not spill out.
You can use a wire instead of the starter to test the tubes .. I did it, it works !
To hold test tubes so that the liquid inside does not spill.
To clean inside test-tubes properly. If it didn't exist it would have to be invented.