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. 9mm Short Thread Caps with Septa Screw Caps with Septa for 8-425 Screw Neck Vial 10-425 Screw Caps with Septa 11mm Crimp Top Caps with Septa 11mm Snap Top Caps