Buy 2ml screw chromatography vial inserts for Waters Vials for HPLC, UPLC, GC 2ml screw #HPLC vial for #chromatography autosampler #instrument. 11.6X32mm, 100pcs/pack; you can also get free sample to test before you buy it. welcome to inquiry. 2ml screw LC vial 2ml screw vial is called 2ml #HPLCvial.