Interlocked racks. Rotate each of the four modules independently. Use several sizes of test tubes, culture tubes, centrifuge tubes or microcentrifuge tubes at the same time. Autoclavable.
Each module holds: 6 x 15 ml tubes, 9 x 1.5 ml tubes, 12 x 0.5 ml tubes or 32 x 0.2 ml PCR tubes
