Our 15 mL, 30 mL, and 50 mL centrifuge tubes are made of premium polypropylene for clarity and centrifugal strength. Tubes and caps may be frozen at temperatures as low as -86˚C.
The maximum centrifugal force is 12,000xg for the 15 mL tubes, 7,000xg for the 30 mL tubes, and 15,000xg for the 50 mL tubes*. Caps have a flat top surface for easy marking and labeling. AZ-7625 and AZ-7640 feature a ‘skirted’ bottom that allows the tubes to stand upright without a separate test tube rack. This series of centrifuge tubes, self-standing or not, are leakproof to 95 kPa/14psi.
*Refers to liquids with a specific gravity of 1.0, using appropriate rotors, cushions, and adapters.