Caps, Screw Top, with Red PTFE / White Silicone Rubber / Red PTFE Septa, fitted in smooth sided, Robo Style, soft polypropylene, Yellow Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MicroSolv Brand. 100/PK.
This septa was designed for specific, older instruments such as Agilent 1050 and to provide extra cleaning when "wiping" a needle. Also provides a small degree of better resealing after injection compared to Silicone Rubber / PTFE Septa.
Compares to Thermo / National Scientific DP® Caps.