Clear Wheaton 33® low extractable borosilicate glass vials and amber Wheaton 320 glass vials are packaged in a Vial File reusable transparent plastic case with alphanumeric grid.

Wheaton 33 glass protects pH balance and product integrity; amber glass provides protection for light-sensitive materials. Vials and caps are autoclavable. Aqueous sample vials have black phenolic solid-top caps with white 14B rubber liners. Organic sample vials have black phenolic fluoropolymer resin-faced liners with 14B rubber (solid-top caps) or silicone (open-top caps).