Sterile Screw Cap Microcentrifuge Tubes

These screw-cap microtubes come sterile, in a variety of sizes, cap configurations, and graduation options. Made from ultra-clear polypropylene, these screw-cap microtubes include assembled caps with silicone O-rings that assure a leakproof seal from -90°C to +121°C. Screw cap microtubes are sterile, RNase, DNase, & pyrogen free and may be centrifuged at up to 22,000xg*.