The main application for HPLC, autosampler, chromatography, Aijiren, waters machine. All autosamplers of Ajiren Tech are 100% integrity tested and manufactured according to ISO 9001 standard. If a 2ml screw HPLC vialsis required. Autosampler Vials at Thomas Scientific. Screw Top Autosampler Vial Convenience Kit. PerkinElmer.