Feature

These tubes are made of medical grade polypropylene; can be repeatedly frozen and thawed
Multiple threads of lab tubes for super sealing performance
Thickened tube wall (explosion proof) and cap for safe sample storage
External thread vials’ caps lack o-rings, which reduces the possibility of contamination
Clear vials with black graduation printing and white writing area
DNase & RNase free, endotoxin-free, foreign DNA free
Gamma radiation sterilized; autoclavable
Working temperature: stable from -196°C to 121°C
Suitable for liquid nitrogen freezing (vapor phase)

Warning

Do not use cryogenic vials in liquid phase of liquid nitrogen. Ideal for cryogenic sample storage in vapor phase of liquid nitrogen.