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Strictly Necessary
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The Corning® PYREX® VISTA™ glass test tube is well annealed, resistant to heat, and chemically stable. Cylindrical test tube has a blue marking spot for easy sample identification. All test tubes have a round bottom style with a beaded rim that is fire-polished. Non-Sterile. Reusable. Material: Borosilicate Glass Code 7740. Corning 70800.