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What Is The Use Of Test Tube Rack?

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A test tube is used as holder of small amount of solution.
And a test tube rack is for holding test tubes when tubes should not be touch.
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My opinion is that a test tube rack is a modeled type of plastic to hold test tubes that may be hot or cold or just to hold it instead of using a test tube holder. Test tube racks are able to hold more than two test tubes, if you want more information just ask...

Your welcome...      BY: A shadow in the darkness
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Anonymous answered
Test tube rack is use for holding the test tube
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Use to put the test tube...

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