Cryogenic Vials manufactured by STE-Mart are made of medical grade polypropylene. These external thread sterile Rnase & Dnase free cryovials are autoclavable and can be repeatedly frozen and thawed.
Universal screw threads Vials fit most common rotors Vials fit standard 1-inch and 2-inch freezer boxes Gamma radiation sterilized DNase & RNase free, endotoxin free, and human DNA free