20mm Vial Stoppers

20mm VIAL STOPPERS - several types to choose from. 20mm round bottom, 20mm 2-leg lyophilization, 20mm solid silicone (contact lens vial stoppers) as well as 20mm septas. For serum vials that have a 13mm hole opening and 20mm outer rim to rim diameter.
20mm Vial Stoppers for Serum Vials

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