Aijiren flat bottomed EPA vials are available in 40 sizes, suitable for water or soil samples. They are made of(offered in) chemically inert Type I borosilicate glass, in either clear or amber for light sensitive samples. 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.