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, aijiren Technology, CTC autosampler and other rotary or robotic arm samplers.40% larger than standard narrow opening