Professional 2ml 9mm screw thread vials with label for HPLC Certified screw thread vials, 9 mm thread, 12 x 32 mm volume 29381U. Supelco. Certified Kits, screw thread vials, 12 x 32 mm, 9 mm thread, unassembled, pkg of 100. volume 2 mL, clear glass vial (w