Aijiren specializes in the production of HPLC Vials with Caps for Autosampler. Generally speaking, Crimp Neck HPLC Vials has the best sealing borosil glass vials-Aijiren HPLC Vials. 1.8-425 Standard autosampler vials(11.6*32mm) for GC and HPLC 2. Aijiren Inc. provide different level Crimp Top HPLC Chromatography Vials for customers. 20ml ...