Gamma sterilized, in resealable bags. RNase-/DNase-/DNA- and pyrogen free, not cytotoxic, cadmium free. USP Class VI, SAL 10-6. Made of PP. Autoclavable. Colour-coded due to cap inserts (optional). Temperature-resistant from -196 °C up to +121 °C. For storage in the vapor phase of liquid nitrogen. Graduated, with writing area. Fast tightening and unscrewing. Star-base foot, free-standing. Single-handed operation with Kryo vials well workstation rack possible.