Microsolv Screw Cap black, knurled PP, with white Sil/red PTFE Septa, bonded, for 9-425mm thread, 12x32mm autosampler vials, 1000 pc/PAK

Caps, Screw Top, with Soft-Guard, White Silicone Rubber / Red PTFE Septa, bonded in knurled, polypropylene, Black Caps. For use with 9-425mm thread, 12x32mm autosampler vials. Soft-Guard Brand. 1000/CS