Septa, 17.5mm, Headspace, Transparent, Bluish Silicone Rubber / White PTFE. For use in 18mm Aluminum, Screw Caps, sold separately. MicroSolv Brand. 1000/CS.
Silicone Rubber / Ultra Clean PTFE, with Durometer of 45 Shore A, (hardness) and 1.3mm thick is good for sensitive analyses. The lower Durometer means that this is a softer Septa and therefore better for easier penetrations by autosampler needles.
Use in ND18, Precision Thread Screw Caps for Headspace autosamplers. Supplied in Polyethylene Bags.