50ml conical centrifuge tubes non sterile with separate screw cap printed graduations

Our tubes are made from tough polypropylene and are rugged enough to withstand freezing to minus 80 and centrifugal forces up to 15,000 x g These tubes are NOT STERILE These large conical tubes come generously sized in cases of 500 tubes, offers you 15 and 50ml tubes in your choice of bagged or foam-racked, both in a sterile bag. Our customers appreciate the flat cap which makes it easy to write on. Other features include: Large frosted marking area, printed on graduation lines and smaller line measurements down to .1ml