Qorpak offers a complete line of Glass Vials including chromatography vials, sample vials, shell vials, TOC vials, VOA vials, scintillation vials and serum vials. Borosilicate glass chromatography vials are offered in crimp top, snap top and screw thread cap in clear or amber, with or without colored marking or graduation spots for easy sample identification. Screw thread borosilicate glass sample vials are available in amber, clear (flint), cobalt blue or green.