1.5 ML/2ML 8-425 Screw Neck Autosampler Vials ND8-. 1. 8-425 Screw Neck Vials ND8 can be used for GC and HPLC. 2. Made from advanced technology and excellent raw materials. 3. Assembled with cap and septa , use them instantly to save your time. 4. There are two kinds of colors, glass and amber. 5.