For storage in mechanical and vapor-phase liquid nitrogen freezers, at temperatures from –80 to 121 °C.

• White marking area, fill line, and graduations printed on the side

Sealing ring, in conjunction with specially designed threads, permits secure closure in approximately 2¹/₂ turns. Thread position - internal for screw-cap, external for vial - greatly reduces risk of contaminating vial contents. Deep-skirted closure allows single-handed aseptic technique without exposing fingers to vial contents.

Convenient filling through large inner diameter of vial. Vials and closures are preassembled and radiation-sterilized.