Protect the contents in your Thermo Scientific™ Biotainer™ bottles and carboys. Thermo Scientific™ Nalgene™ sterile polypropylene biotainer replacement closures are for 1, 2, 5, 10 and 20 L polycarbonate biotainers.

• Designed to fit only nalgene bottles to provide a guaranteed leakproof system
• Polypropylene with silicone liner
• Closure size: 48 mm
• Packaged individually: 1 per bag, 6 bags or 50 per case, 300 in a case