hplc vial caps for wholesales for Waters HPLC USA Amazon.com: water hplc Autosampler Vial, 2ml HPLC Vial with Caps, 9-425 Amber Vial with Blue Screw Caps,Writing Patch,Graduation,White PTFE & Red Silicone Septa Fit for LC Sampler(100pcs,Brown) 3.8 out of 5 stars 11 $21.69 $ 21 . 69 ($0.22/Count)