Aug 12, 2021 · 8mm 2ml HPLC Vials for PERKIN ELMER--Aijiren Vials for 2021 - 05 - 27 The 8-425 Autosampler Vial provided by Aijiren can choose Caps with or without a center opening, an autosampler with a center opening for easy sampling, and an HPLC Vials without a center opening for storing samples.