Screw Neck Sample Vial Cap With Septa Liquid Chromatography China Lab 1.5ml 9mm Wide Opening Screw Glassware Aijiren mainly supply autosampler vial, HPLC vial, GC vial, septa and caps, EPA vial, TOC vial, COD vial, liquid chromatography and Gas chromatography vial, reagent bottle with GL45/GL80 screw cap and glass stopper.