10-20mL 18mm Screw Thread Headspace ND18. White, Red, Blue, 1.3-1.6mm thickness. Headspace vials from Aijiren Technology, Inc with high quality and favorable price. Zhejiang Aijiren is a manufacturer of Laboratory consumables. We supply autosampler vials, septa and caps at factory price. 18mm Screw Thread Headspace Vials are often used in