26/2/2021 · 2ml sample vials is generally divided into low boron and neutral.2ml sample vials are available in a variety of neck finishes and opening diameters. 9mm Short Tread HPLC Autosampler Vial 9mm Short Thread Caps with Septa 8-425 Screw Neck HPLC Autosampler Vial Screw Caps with Septa for 8-425 Screw Neck Vial 10-425 Screw Neck HPLC Autosampler Vial 10-425 Screw Caps with Septa