Septa, 20mm, Headspace, Molded Butyl Rubber, Dark Grey. For use in 20mm Crimp Caps, sold separately. MicroSolv Brand. 1000/CS.
Shaped, Butyl Rubber Septa, Durometer of 55 Shore A, (hardness) and 3.0mm thick. Temperature resistant from -40⁰ to 120⁰C. Use in Aluminum or Steel Crimp Caps for Headspace autosamplers.
Useful when PTFE is a contaminant or one of the analytes. Supplied in polyethylene bags.
Can also be used as a stopper.