Cryogenic Vial Bio Plas Polypropylene 2 mL Screw Cap

Made of polypropylene copolymer, these tubes are leakproof, inert, nonpyrogenic, and virtually unbreakable

External threads eliminate material hang-up and minimize loss and contamination of valuable or hazardous samples

Screw cap has an internal O-ring for leakproof processing and storage

For use in microcentrifuges with fixed-angle heads

Skirted models are freestanding and require the 20170-714 adapter