Nalgene* Unwire* Test Tube Racks

Unwire* full-size polyketone test tube racks securely hold a full load of test tubes or centrifuge tubes in the following popular sizes: 13, 16, 20, 25 and 30 mm. Up to 72 of the smaller diameter tubes can be held at once. All sizes are molded in six bright, permanent colors. Useful in a wide temperature range with good chemical resistance.