Modular test tube support system

This multiple option test tube support system accommodates a variety
of tube sizes. Rotate each cube independently-use several sizes of
test tubes, culture tubes, or microcentrifuge tubes at the same time.
The modules and support tray are constructed of durable, chemical
resistant polypropylene. The cube modules are color coded for
convenience. Each system consists of four cubes and one support tray.
Compatible with the following tubes: 15- and 50-mL conical; 12 x 75
mm, 13 x 100 mm, 16 x 125 mm, and 17 x 100 mm culture; and 1.5- and
2.0-mL microcentrifuge. System can be autoclaved.