40mL Sample Vials feature an Open-Top Screw Cap design with specially designed septum of 10 mil of fluoropolymer coating facing 90 mil of silicone. Ideal for water sampling.
4mL and 8mL Sample Vials come with solid black phenolic caps lined with fluoropolymer coating-faced white rubber liners. Vials are manufactured from ASTM Type I, Class A borosilicate glass.