Membrane screw cap, GL 45, PP, blue, for laboratory glass bottles ePTFE Pore size 0.2 µm

For all GL 45, GL 32 and GL 25 threads. Ideal for autoclaving processes because the 0.2 micron ePTFE membrane permits pressure equalisation and tight sealing, greatly reducing the risk of contamination. Ingress of liquids or solids is prevented and the bottle contents remain sterile. Typical applications: storage or transport of gas generating media, autoclaving of media.