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,