The Beckman Coulter 358125 is a 15mL polypropylene conical centrifuge tube with a flat-top screw cap. It has graduated markings up to 15mL and can withstand centrifugal forces up to 5,000 x g. The tubes are made from clear polypropylene for visibility of contents. They can be autoclaved and are non-pyrogenic and non-cytotoxic. The tubes have wide openings for easy sample transfer and are suitable for a variety of laboratory applications including sample preparation, storage, and centrifugation. The tubes come sterile and individually wrapped.