Scienceware* Stack Rack* Test Tube Racks

These sturdy, rigid racks feature interlocking end plates for secure stacking when loaded with tubes up to 4 in. (10 cm) long. The end plates have handles and rows are numbered and lettered for tube identification. Polypropylene racks are sturdy, chemical-resistant and will not shatter or stain. Steam autoclavable at 250�F (121�C). Top shelf height is 2 3/4 in. (70 mm). Crystal-clear polycarbonate racks are perfect for submersing in water baths. Top shelf is 2 7/8 in. (73 mm) high.