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medical test tubes - clear empty test tube stock videos & royalty-free footage00:24Medical test TubesTest Tube, Laboratory, Beaker
blue liquid flowing in a spiral tube - clear empty test tube stock videos & royalty-free footage00:49Blue liquid flowing in a spiral tubeLiquid, Spiral, Tubing
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medical test tubes - clear empty test tube stock videos & royalty-free footage00:16Medical test TubesTest Tube
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in the experiment, the dropper drops the reagent into the glassware - clear empty test tube stock videos & royalty-free footage00:10In the experiment, the dropper drops the reagent into the glasswareLiquid, Glass - Material, Test Tube
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a chemical reaction in a plastic cup turning the liquid from clear to purple. - clear empty test tube stock videos & royalty-free footage00:28A chemical reaction in a plastic cup turning the liquid from clear to purple.Laboratory, Liquid, Table
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chemical reactions cause clear liquid to turn pink and substances inside tiny bottles to glow luminously as part of tests into the nutritional value of food. - clear empty test tube stock videos & royalty-free footage00:12Chemical reactions cause clear liquid to turn pink and substances inside tiny bottles to glow luminously as part of tests into the nutritional value of food.Laboratory, Cotton Swab, Test Tube
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