9mm Vials - Chromatography | qecusa.com. May be used with robotic autosamplers in place of crimp style vials. Vials have a 40% larger opening for easier sample preparation. Vials must be used with Hplc Sample Vials - Aijiren. Optional ceramic write-on spot with fill marks; The wide mouth opening is 40 % larger than standard crimp style vials.