1.5 ml Self-Standing Saf-T-Seal Screw Cap Tube, Conical Interior, Natural PP, Sterile, with White Tethered Cap

• Sterilized and pre-assembled with caps open
• Saf-T-Seal™ tubes withstand centrifugation up to 20,000 × g
• Suitable for boiling, vapor-phase liquid nitrogen, or -80°C storage

Saf-T-Seal™ tubes with tethered caps have an inert TPE O-ring molded directly into the white polypropylene tethered cap. The O-ring cannot fall out, and an optical quality control process ensures a perfect seal. The tubes are made from high-clarity, medical-grade polypropylene. Certified RNase, DNase, DNA, PCR inhibitor, endotoxin/pyrogen free. Sterile and pre-assembled with caps open.