Premium cardboard freezer boxes with lid, 2", 81-well, assorted color matte coating. -196°C to 121°C. Holds microtubes and centrifuge tubes. 12/pk. Chemically resistant to alcohols and mild organic solvents. Holds 0.5ml, 1.5ml, 2.0ml, 5ml and 10ml microtubes and 15ml or 50ml Centrifuge Tubes. Suitable for liquid nitrogen freezing. Water-resistant coating for improved durability. Five assorted colors available: white, yellow, pink, blue, and green.