VWR TOC/VOC EPA vials manufacturer--glass sample vials VWR EPA vials for laboratory-Voa Vial Supplier Manufacturer,Factory The 40 mL vials are offered in clear (Type 1, 33 expansion) and amber Type 1, 51 expansion) borosilicate glass. They are avialable in two sizes, 27.5 x 95mm or 29 x 82mm and are packaged 100 vials per box. 40ml EPA vial.