Microtube with Attached Screw Cap for Color Insert and O-Ring

These disposable screwcap microcentrifuge tubes are available sterile or non-sterile. The sterile tubes include a cap with a clear (natural) nitrile o-ring. All are DNase, RNase and Pyrogen free. The non-sterile tubes and caps are sold separately so that you have a choice of cap styles (with o-ring or without). Tube: Polypropylene Cap: Polypropylene O-Ring: Nitrile Centrifuge Maximum RCF:  25,000 x g DNase, RNase and Pyrogen free