ScrewSeal™ Screw Cap Microcentrifuge Tubes

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 leak-proof 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 22,000×g*.

*Refers to liquids with a specific gravity of 1.0, using appropriate rotors, cushions, and adapters.

• Ultra-clear polypropylene
• Leak-proof O-ring s eal
• Light-blocking amber available
• Sterile; RNase, DNase, Pyrogen free

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