4 ml 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. 1. 4mL 13-425 Screw Neck Vial ND13 can be used for GC and HPLC. 2. Made from advanced technology and excellent raw materials. 3.