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Chemglass Life Sciences Valve, Mininert, 20mm AS/F (shown above, not on vial)

Supplier: Chemglass Life Sciences CG4914C20
Valve, Mininert, 20mm AS/F. These resealable valves allow repeated and unlimited syringe-needle access to samples. Slide the valve one way to open the needle-port. Slide the valve back to close and completely seal. The 20mm crimp seal (13mm ID Neck) valve for features a serrated flange which allows the valve to turned and inserted into the glassware neck of the vial and provide a leak-tight fit.
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