Feature:

● Made of medical grade polypropylene; can be repeatedly frozen and thawed

● Multiple threads 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

● 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)