ScrewSeal 1.5mL (12.8 x 45mm), w/ Screw-cap & O-Ring, Sterile, Conical bottom, Non-graduated
ScrewSeal screw-cap microtubes come sterile, in a variety of sizes, cap configurations, graduation options, and now light-blocking amber. 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. All ScrewSeal screw cap microtubes are sterile, RNase, DNase, & pyrogen free and may be centrifuged at up to 22,000xg*.
*Refers to liquids with a specific gravity of 1.0, using appropriate rotors, cushions, and adapters.