Advanced Vial Closure System for Screw Thread Chromatography Vials Loy Shick (Aijiren Tech Scientific Rockwood, USA), Brian King (Aijiren Tech Scientific, Runcorn, UK) Technical Note 20537 Key Words Screw thread chromatography vials, 9 mm wide opening screw thread closures, evaporation, fluorocarbon free, PTFE free, 2 mL storage vial closure