Microsolv Screw Cap natural transparent, smooth PE, with 1mm thick white Sil/blue PTFE pre-slit (X shape) Septa, for 11mm 12x32mm Snap Top autosampler

Caps, Snap Top, with 1.00mm thick, White Silicone Rubber / Blue PTFE Pre-Slit (X Shape) Septa, fitted in smooth, soft polyethylene, Natural Transparent Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. MicroSolv Brand. 1000/CS.