Equipment and Instruments

DURAN® Membrane Venting GL Screw Cap, PP


Please note: For an official quote with updated pricing and availability in PDF, please add your items and quantities to your quote and submit.


Product CodeDiameter – mmHeight – mmColourThread – GL
29-118-13073319BLUEGL 25
29-118-19074124BLUEGL 32
29-118-28095425BLUEGL 45

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Additional information


GL 25, GL 32, GL 45


Blue PP Welded-in expanded PTFE Membrane Membrane for Pressure Equilisation during Autoclaving
Pressure equalisation during steam sterilisation
The microporous structure of the ePTFE membrane enables sterile gas exchange in two directions, while blocking the penetration of liquids or solids and the bottle contents remain sterile
Increased gas exchange rate due to thin 0.2-µm ePTFE membrane , combined with larger ventilation openings
The PTFE membrane and its polypropylene mesh support are ultrasonically welded in place forming a durable seal
Cost effective as the caps can be reused several times (Replacement is recommended after 3 to 5 autoclave cycles due to durability, or if the membrane becomes damaged or contaminated)
Polytetrafluoroethylene (ePTFE) membrane (conforms to USP 121 °C Class VI) with polypropylene mesh

Images provided are for illustration purposes only and actual products might differ slightly. All CC Imelmann product information is obtained directly from our suppliers. We cannot be held responsible for any errors or omissions (E&OE).

If you would like to confirm details on any product, please pop us an email.

“Prices are subject to change” For fixed prices and availability, please submit a “Quote Request”

Lead times:

  • Ex-stock: Goods are available at our warehouse. Subject to prior sale
  • Ex-import: 6 – 8 weeks from date of an official order. For a shorter delivery time, please contact us.
  • Special manufacturing: eg. glassblowing; 6 – 8 weeks
  • Special non-stock: 6 – 8 weeks


*Lead times are given in good faith but availability is always subject to prior sale.

*For our cancellation and returns policy, please refer to our Terms & Conditions.