Vial Production--Aijiren Vials for HPLC/GC. As a result, Aijiren 2ml HPLC sample vial are designed to meet the highest standards you can expect. So 2ml HPLC vial can be exported to 32 countries. Rated 4.7 /5 based on 451 customer reviews. 2ml hplc vial 9mm screw vial screw thread vial. Free Sample Get Price.