2021/9/27 · precleaned 40ml VOA vials for lab use China Manufacturer-COD Vials 202/8/2 · Greenwood Products 03-40BTS723 40mL Clear VOA Vial Assembled w/Open Top Bonded T/S Septa {Heavy} Cap, Certified (Case of 72) Open top VOA vials meet or exceed EPA standards for volatile organic sampling.