Made of polypropylene
These Simport Centrifuge Tubes offer superb quality and performance at an affordable price. They feature an extended lip for easy opening. Marked graduations and frosted labeling panels on tube and cap for easy writing and identification. These Simport centrifuge tubes withstand centrifugal forces of up to 20,000g for the 1.5 ml tube and 5,000g for the 5 ml size. Will withstand extreme temperatures from -90 °C up to +121°C. Autoclavable (120 ºC for 15 minutes at 15 PSI).