Screw Autosampler Vials for GC and HPLC is the most used in 2ml Autosampler vials.It is suitable for Aijiren, AB Sciex, Brook, Techcomp, PerkinElmer, ThermoScientifics, Shimadzu, Waters, CTC autosampler and other rotary or robotic arm samplers.40% larger than standard narrow opening vial, prevents syringe problems.