Kits include 20 ml clear glass precision screw neck headspace vial (22,5×75,5 mm), magnetic screw cap silver with 8 mm central hole and septum. Company Introduction Founded in 2007, Zhejiang Aijiren, Inc. specialized in chromatography consumables, such as autosampler vial for HPLC, headspace vial, GC vials, micro inserts, septa and caps