Aijiren Gc Vials found in: Screw Top Vials, Wide Opening Crimp Top Vials, Combi PAL and GC PAL Liquid Injection Vials and Caps, Sample tray,CTC,98 2ml /.. , and autosamplers Screw top 4 mL glass vials are a custom fit to the Aijiren autosampler tray for use as sample as well as wash vials.