Labcon 96-Place Racks and Storage Boxes. These are for use with 0.5mL, 1.7mL and 2.0mL micro centrifuge tubes and 2.0mL cryo- vials. These double-sided racks hold 1.7mL and 2.0mL tubes on one side and 0.5mL on the reverse side. Rack and clear lid are fully autoclavable (122°C) and freezable(-80°C). Made of polypropylene.