Feb 15, 2022 · 10-20mL 18mm Screw Thread Headspace ND18–Aijiren HPLC Vials We supply autosampler vials, septa and caps at factory price. 18mm Screw Thread Headspace Vials are often used in Shimadzu, Spectral Physics, Varian, and other autosamplers. 18mm Screw Thread top septa is used PTFE and high-quality