The test tube rack holder lets you shake one or two entire racks of test tubes at once. Racks containing different sizes of tubes can be shaken simultaneously. Racks are held in place by a restraining cover, which automatically releases and remains captive when retaining nuts are loosened for rack insertion or removal. Existing racks up to 12" x 5" (30.5 x 12.7 cm) may be used with capped or stoppered tubes from 75 to 200 mm long.
Use this Test Tube Holder with Glas-Col's Bench-Top Shaker (item# 21200), which is an adaptable, user-friendly shaker that is capable of many hours of continuous shaking and mixing and marries reciprocating shaking and mixing with bench-top convenience.