Oxford Lab Products centrifuge tubes are suitable for the daily workflow of sample storage and centrifugation in a lab. Oxford tubes are made with a leak proof cap for increased safety and a large writing area for easy identification. Produced in a fully automatic, human touch free clean room facility, these tubes are ensured to be free of contaminants such as DNase, RNase, human DNA, endotoxins, pyrogens and heavy metals. These tubes can be sterilized by autoclaving them for 20 minutes at 121°C. Oxford tubes are available in 2 volumes, 15mL and 50mL. The 15mL tubes can withstand up to 17,000 x g and the 50 mL tubes can withstand up to 20,000 x g. They both have temperature ranges from -80°C to +121°C. The tubes come in bulk or eco-friendly racked packaging.