Weight: 27.00 lbs Made of durable cardboard with superior white outer coating Chemically resistant to alcohols and mild organic solvents Water-resistant coating for improved durability Holds 0.5ml, 1.5ml, 2.0ml, 5ml and 10ml microtubes Working temperature: stable from -196℃ to 121℃ 133 x 133 x 77mm, Suitable for liquid nitrogen freezing