EarthOx's 1.5 ml conical Microcentrifuge tubes with caps. Packaged in a resealable bag of 50 to maintain sterility. The tubes are sterile, DNase/RNase free and non-pyrogenic. RCF up to 25,000 xg. **Check for EarthOx's special promotions** ***FOR IN-VITRO LABORATORY RESEARCH USE ONLY**