PolarSafe cryogenic storage vials provide biological sample storage in temperatures as low as -196°C. Innovative vials feature a co-molded screw cap that combines polyethylene (PE) with a thermoplastic elastomer (TPE) that eliminates the need for silicone o-rings. Traditional vials have the potential for contamination if the o-ring is lost, cut or bulge due to over-tightening of cap; PolarSafe vials enable a safer sample storage environment. Available with round or self-standing bottoms; external or internal threaded caps Vials are certified at 95 kPa to provide a 100% leak proof seal Manufactured in a class 7clean room (class10,000) in accordance with FDA, GMP & ISO quality standards (ISO13485:2004, ISO14644 & 14698) Certified DNase – RNase, pyrogen, ATP and Human DNA free Gama sterilized 50 per pack in resealable safety bag Temperature range -196° - 121°C Each vial includes printed barcode and white writing surface for specimen identification Multicolored ca