• Sterile, RNase, DNase, pyrogen and cytotoxin free
• Compatible with standard rotors
• Frosted marking surface
• High clarity polymers
• Printed graduation and marking spot

These centrifuge tubes are made of premium polypropylene for clarity and centrifugal strength. Tubes and caps may be frozen at temperatures as low as -86-deg C. The maximum centrifugal force is 12,000×g for the 15mL tubes, 7,000xg for the 30mL and 50mL skirted tubes, and 15,000×g for the conical 50mL tubes. Caps have a flat top surface for easy marking and labeling. These centrifuge tubes are leak-proof to 95 kPa/14psi.