Our HPLC and GC Autosampler Vials are available in clear or amber Type 1 borosilicate glass. A variety of styles are available to fit your instrument. Screw-top. Aijiren 10ml Clear Crimp Top Glass Gc Vial 20mm Gc Headspace . Aijiren mainly supply autosampler vial, HPLC vial, GC vial, septa and caps, EPA vial, TOC vial, COD vial, liquid