Spectra Tube with Flat Rainbow Screw Cap, 50 ml, Bulk Bags, 500 Pack

Don't let the pretty colors fool you!! these conical 15ml and 50ml centrifuge tubes are made of premium polypropylene, with exceptionally uniform wall thickness for clarity and centrifugal strength. Tubes and caps may be used for sample storage at temperatures as low as -86c. The maximum centrifugal forces are 15,000xg for the 50ml version.* tubes and caps are suitable for stem cell research and certified sterile, rnase, dnase, and pyrogen free. features: color coded caps for easy sample identification 50ml rated to 15,000xg sterile, rnase, dnase, pyrogen and cytotoxin free sterile gamma and individually packed leak proof