Rubber Bottle Stoppers Self Healing Injection Ports. Use 1/4 inch or 7mm drill or punch for making an opening. Fits 13mm Bottles with 7mm opening. 100% Steam Sterilization Safe

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Rubber Bottle Stoppers Self Healing Injection Ports. Use 1/4 inch or 7mm drill or punch for making an opening. Fits 13mm Bottles with 7mm opening. 100% Steam Sterilization Safe

  • Premium Injection Ports (Steam Sterilization Safe) 13mm
  • Smaller for Increased Sanitary Conditions
  • 13mm rubber stoppers are for a 7 mm or 1/4 inch diameter hole opening
  • Excellent Heat Stability (Butyl Rubber) 100% Steam Sterilization Safe
  • Great for liquid culture and BRF Jars or Rye Grain Jars

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