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  5. DWK Life Sciences DURAN™ Membrane Venting GL Screw Cap, Blue PP, Welded-in ePTFE Membrane for Pressure Equalisation During Autoclaving

DWK Life Sciences DURAN™ Membrane Venting GL Screw Cap, Blue PP, Welded-in ePTFE Membrane for Pressure Equalisation During Autoclaving

Product Code. 15846921 Shop All DWK Life Sciences Products
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Thread Size (Metric):
GL 25
GL 32
GL 45
Unit Size:
Pack of 5
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Product Code. Thread Size (Metric) Unit Size
15846921 GL 25 Pack of 5
15856921 GL 32 Pack of 5
15866921 GL 45 Pack of 5
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This item is not returnable. View return policy
Product Code. 15846921 Supplier DWK Life Sciences Supplier No. 291181307
Estimated Shipment: 02-10-2026
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Description

DURAN™ Membrane Venting GL Screw Cap, Blue PP, Welded-in ePTFE Membrane for Pressure Equalisation During Autoclaving allows safe steam sterilisation of media bottles. The 0.2μm ePTFE membrane enables sterile gas exchange and pressure equalisation while keeping bottle contents sterile.

  • Pressure equalisation during steam sterilisation, the 0.2μm ePTFE membrane permits automatic sterile gas exchange in two directions
  • Microporous ePTFE membrane blocks ingress of liquids or solids, keeping bottle contents sterile throughout the autoclave cycle
  • Increased gas exchange rate due to thin 0.2μm ePTFE membrane combined with larger ventilation openings
  • PTFE membrane and polypropylene mesh support are ultrasonically welded in place, forming a durable seal
  • Reusable and cost effective — replacement recommended after 3 to 5 autoclave cycles or if membrane becomes damaged or contaminated
  • ePTFE membrane conforms to USP 121°C Class VI; supported by polypropylene mesh
  • Compatible with GL 25, GL 32, and GL 45 DIN thread laboratory bottles; ideal for storage or transport of gas-generating media

Specifications

Color Blue
For Use With (Application) Pressure equalisation during steam sterilisation/autoclaving of media or buffers; Sterile gas exchange for aerobic microbial, shaker and suspension cell cultures; Autoclaving of media and buffers; Short-term storage of sterilised media; Storage of gas generating materials
Material Polypropylene, ePTFE
Quantity 5/Pk.
Sterility Non-sterile
Thread Size (Metric) GL 25
Diameter (Metric) 33 mm
Autoclavable Autoclavable
Disposable Reusable
Product Type Bottle Cap
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