Mar 22, 2020 · Part 5 Autosampler Vial Product List (Bestsellers) 1. Screw 8-425 (8mm, N8) HPLC Vial, Cap, Septa and Inserts. 8-425 2mL HPLC Vial without Write-on Spot. 8-425 2mL HPLC Vial with Write-On Spot. Closure & Septa for 8-425 (8mm) Screw HPLC Vials. Insert for 8-425 (8mm) HPLC Vials. 2.