Ready to Sterilize 20mm Igloo Lyophilization Vial Stoppers, Bag of 1,000. CFU and endotoxin tested in the USA by an FDA, ISO certified testing firm.
Pre-washed and supplied in double bags (thinner exterior polyethylene bag with an interior autoclave bag). Ready for the customer's steam sterilization / autoclave cycle. Third party bioburden testing results are available for review by established customers.