Units can be firmly anchored laterally to one another by using pins supplied with each rack. Handles of lower racks fit into the upper racks for safety and stability.

One side holds 80:
1.5 and 2 ml microcentrifuge tubes or
1 to 5 ml cryogenic vials or
10 x 75 mm or 12 x 75 mm tubes or
0.5 to 2 ml screw cap microtubes.

Reverse side holds 60:
PCR® or 0.2 to 0.5 ml microcentrifuge tubes.