30mm Vial Stoppers

30mm VIAL STOPPERS - gray chlorobutyl 30mm vial stoppers that meet USP Class VI. For use on serum vials / serum bottles that have a 15mm hole opening and 30mm outer rim-to-rim diameter. usually used on 250mL and 500mL serum bottles.
30mm Vial Stoppers for Serum Bottles

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