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Clamps designed to hold one or more test tubes during clinical laboratory procedures. These clamps are available in a variety of materials, shapes, and sizes according to the test tube diameter and/or the procedure to be performed; they are frequently corrosion-protected spring wires and/or threaded metallic devices. Dedicated laboratory test tube clamps are available that resist heat (e.g., up to more than 220 degrees Celsius [430 degrees Fahrenheit]) and/or chemicals (e.g., salts, solvents, acids).
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