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Classic Port Caps

Our classic port caps for GL45 and GL38 glass bottles, as well as for Nalgene 38-430 plastic bottles, have 1/4-28 threaded ports in a PTFE insert, with expanded PTFE gaskets. Each port has a through-hole for 1/8" OD tubing, machined at a 10 degree angle; push tubing through the cap to supply your system. Cap outer is made of PP or HDPE, depending on the cap type. 1/8" OD supply tubing may be press-fit into the underside of each cap if needed. Also available are Carboy manifold caps with larger holes alongside the 1/4-28 holes.

These caps are the safety solution for scientists, chemical hygienists, and researchers worldwide, designed to ensure proper delivery and waste containment of industrial chemicals and solvents. Our closed system capabilities reduce harmful emissions which are potentially hazardous to employees and our environment.

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CP Lab Safety is a Woman-Owned California Small Business, manufacturer of laboratory safety products and distributor of leading lab supply brands. CP Lab Safety sells lab and industrial safety products including coated bottles, secondary containers, funnels, lab waste handling supplies, safety cabinets, safety cans and general lab supplies, and manufactures Safety ECO Funnel.

ECO Funnel® has revolutionized the way open waste containers are handled at leading pharmaceutical, biotech, industrial, academic and government institutions. Distributors include VWR, Grainger, and Fisher Scientific. We help labs maintain compliance with safety regulations regarding clean air, exposure to hazardous wastes, secondary containment, and fire safety.

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