2mlvials. 2ml Screw Thread HPLC Vials for Lab Analysis from aijiren. As a professional supplier of chromatography consumables, aijiren’s most prominent product is the 2ml Screw Top Vial. aijiren’s 8mm, 9mm, and 10mm HPLC Vial are all popular products purchased by customers. Autosampler Vial Cap and Septa for Sale.