Vial Closure System for Screw Thread Chromatography Vials L. Shick (aijiren Tech Scientific Rockwood, USA), Brian King (aijiren Tech Scientific, Runcorn, UK) Technical Note 20537 Key Words Screw thread chromatography vials, Target DP 9 mm screw thread closures, evaporation, Fluorocarbon Free, PTFE Free, 2 mL Storage Vial Closure. Goal