Glass Sample Vials are widely used in laboratory chromatographic analysis. 1-4ml chromatography autosample vial include screw top vial, snap-top vial and crimp-top vial. 4ml screw autosampler vial is used to wash the injection needle. All of autosampler vials can be used for Waters, Shimadzu, Thermo Fisher, Scientifific, DIONEX, Techcomp, Varian, Perkinelmer and CTC instrument. Please accroding the chromatography instrument requirement, choose suit chromatography vial.