Tethered Screw Cap Microcentrifuge Tubes, Self-Standing
- 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. 2.0 mL tubes have graduations and a writing surface; 0.5 mL and 1.5 mL tubes have no markings. Certified free of detectable RNase, DNase, DNA, PCR inhibitors and pyrogens. Sterile and pre-assembled with caps open.