● Made of medical grade polypropylene

● Autoclavable

● Can be repeatedly frozen and thawed

● Universal screw threads

● Vials fit most common rotors

● Vials fit standard 1-inch and 2-inch freezer boxes

● Gamma radiation sterilized

● DNase & RNase free, endotoxin free, heavy metal free, and human DNA free

● 81-8204 2ml self-standing vials have a white writing area and black graduations

● 81-7055 and 81-7205 self-standing vials are brown.

● Working Temperature:  -86°C ~ 121°C