Global supplier of HPLC&GC consumables. Our major products are chromatography autosampler vials with closures, inserts, crimper and syringe filters, etc; Water analysis consumables such as COD test tube. 1.5mL 8-425 Screw Neck Vial ND8 1.5mL 9mm Short Thread Vial ND9 1.5mL 10-425 Screw Neck Vial ND10 1.5mL 11mm Snap Ring Vial ND11 1.5mL 11mm Crimp Ring Vial ND11 4mL 13-425 Screw Neck Vial