cryoking 5.0ml clear polypropylene sterile cryovials with external thread and purple caps assembled. cryovials come with side barcode and marked graduations. 25 cryovials/bag, 20 bags/pack, 2 packs

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

Radiation sterilization; autoclavable

Working temperature: stable from -196°C to 121°C

Suitable for liquid nitrogen freezing (vapor phase)