Feature:
● These vials with caps are made of PP; Can be repeatedly frozen and thawe
● Multiple threads for super sealing performance
● Thickened cryogenic tube wall (explosion proof) and cap for safe sample storage
● Self-Standing cryovials have white writing area and black graduations
● Internal threads vials for super performance
● DNase & RNase free, endotoxin-free, foreign DNA free
● These lab tubes are stable from -196°C to 121°C
● Suitable for liquid nitrogen freezing (gas phase)