Zhejiang Aijiren is a manufacturer of Laboratory consumables. We supply Sample Storage vials, septa and caps at factory price. 1. ND24 EPA Screw Neck Vials(Clear/Amber) 2. Available with black or white screw caps with 24mm thread 3. Available as closed top screw seals or with centre hole 4. Nature PTFE/nature Silicone septa 22*3mm Features 1. Caps and vials are ideal for sampling and storage 2.