Wheaton 40ml VOA vials distributor WHEATON® 40mL EPA Vial, Amber Vial, 40 mL | DWK Life Sciences Converted from Type I borosilicate glass tubing Ideal for use in water sampling according to EPA 40 CFR 136, “Guidelines for Establishing Test Procedures for the Analysis of Pollutants” Caps attached to vials Vials packaged in convenient trays