DURAN® Membrane screw cap, GLS 80®, PP, blue, for DURAN® laboratory glass bottles ePTFE Pore size 0.2 µm, EACH

- 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