9x9 (81-well) wells Biologix PP Cryogenic Storage Boxes, Case of 20

● Made of polypropylene, chemically resistant to alcohols and mild organic solvents

● Compatible with 0.5ml, 1.5ml or 2.0ml microtubes and cryogenic vials

● Boxes feature numbered grids for sample identification

● Drain holes and air vents minimize condensation

● Five assorted colors available

● Suitable for storage in mechanical freezers

● Temperature range: stable from -90°C to 121°C

● Can be repeatedly frozen and thawed