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Test Tubes

US made, screw cap test tubes.




Our threaded Test Tubes are manufactured in the United States of the highest quality Type I Borosilicate glass. Featuring rounded bottoms and a deep xx-415 GPI thread finish for an extra turn of security for those important jobs, these heavyweights are fully annealed for maximum strength.

All prices include a F-217 cap and are available with an optional Teflon or 14B Rubber closure to accomodate harsh materials and steam sterilization (autoclave).

An explanation of different types of closures you can put on your bottles/vials and the types of liners each closure has.


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Buy vials, tubes, and closures from a veteran owned business