2ml 9mm Screw Thread Vials ND 9 - LabKings | Crown your labwork. Flat base, clear, 2ml 9mm neck HPLC vials, screw thread vials USP type LabKings. Add to cart Compare Wishlist Quick view 1.5mL 9mm Short Thread Vial ND9 for GC and HPLC. 1.5mL/2mL short screw thread ND9, wide opening, 9mm thread hplc vials with matched PP screw caps ND9, PTFE