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89mm Caps

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Cap Neck Finish Guide

89mm caps and closures include 89-400 and other thread finishes.

Caps and closures are measured using two numbers in the format of 20-400 or 20/400: the first number is the distance in millimeters from outer thread to outer thread when looking at the top of the container; the second is a reference to the design of the threads themselves. Review the image to the right in order to understand thread design, to assist you in selecting the correct cap for your bottle or container. Carefully review your container's threads before selecting a cap even if you know the first measurement; not all 20mm caps will fit a 20mm opening, due to the differences in thread types between manufacturers.

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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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