Cryogenic vials are designed for storing biological material, human or animal cells, at temperatures as low as -196 C but should be used only in the gas phase of liquid nitrogen. V7759 Nunc ® CryoTubes ® cryogenic vial, 1.8 mL, internal thread, round bottom, free standing, 1800/cs, capacity 1.8 mL, Internal thread, round bottom (self-standing), pack of 1800 ea (4 x 450 ea)