Aug 07, 2020 · Aug. 7th, 2020. Among the 2ml Autosampler Vial produced by Aijiren, Glass Vial with Screw Cap is the most popular with customers because Glass Vial with Screw Cap is easy to operate, easy to seal and easy to open,Aijiren's 2ml Glass Vial with Screw Cap has several different specifications, 8mm, 9mm and 10mm.