4 Ml Vials found in: Screw Cap Sample Vial, E-C Vials w / Rubber Lined Caps, Clear, 4 ml, 4 mL Assembled Screw Thread Vial Kits, Vial Sample S / TW / PTFE.. 4 mL capacity 15 x 45 mm Custom fit for , 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.