Jul 4, 2022 · 24mm 40ml VOA vials with caps and septum-Voa Vial Supplier The 40 mL vials are offered in clear and amber borosilicate glass. Sizes: 27.5 x 95mm and are packaged 100 vials per box. EPA vial caps Both injection-type and solid storage caps are available for these vials. EPA vials are 24mm screw top and suitable caps are sold separately.