9mm septum cap types China-Aijiren HPLC Vials HPLC vial septum cap for chromatography vials China-Aijiren Red PTFE/white Silicone septa, 9mm green short screw-thread polypropylene cap, 6mm centre hole White PTFE/red Silicone septa, 9mm blue short screw-thread polypropylene cap,closed top This is the end of the introduction of HPLC Vials Caps with Septa.