Chemglass CLS-4764-002 Polypropylene 2.0mL Sterile Self-Standing Cryo Vial, with Internal Thread and Silicone Washer Seal (Pack of 100)

These cryovials are designed for storing biological material, human or animal cells, at temperatures as low as -196 degree C but should be used only in the gas phase of liquid nitrogen. A silicone washer between cap and vial ensures a positive leak-proof seal at all temperatures. A 1-1/4 turn of the cap is sufficient to seal the vial. The closures and vials are both manufactured of polypropylene having the same coefficient of expansion, which further enhances the leak-proof qualities of these vials at changing temperatures. Vials have a white marking area for sample identification, can be color coded by using a Capinsert. Vials are sterilized by gamma radiation and are packaged in unique, tamper-proof, re-sealable safety-lock bags of 100 pieces. Autoclavable. Certified DNase, RNase, Pyrogen and DNA free.