Caps, Screw Top, with White Silicone Rubber / Natural TEF Septa, fitted in smooth sided, Robo Style, soft polypropylene, Blue Caps. For use with 9-425 thread, 12x32mm autosampler vials. MicroSolv Brand. 100/PK.
White silicone rubber and white TEF fitted septa for a lower cost cap.
TEF is equally inert as PTFE for standard chromatography.
Compares to Thermo™ / National DP™ caps.