Loy Shick (Thermo Fisher Scientific Rockwood, USA), Brian King (Thermo Fisher 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. Goal The new Thermo Scientific ™ Chromacol 9 mm