5)Short screw Thread ND9 vials(11.6*32mm) for GC and HPLC, suit for aijiren, aijiren Technology ,aijiren Tech, Beckman, CTC, Gilson, Knauer, Shimadzu, Spark, Varian, VWR( Mercy)/ Hitachi, PerkinElmer. 6)Polypropylene bottle caps have chemical inertness, which is suitable for the majority of chromatographic application.