EPA approved chlorinated water sampling bags feature a special gusset on the bottom of the bag that flattens out when water is put in the bag, allowing it to stand up completely by itself. Single service, sterilized (inner surfaces).

Available in 100 mL and 300 mL sizes, the bags contain 10 mg or 30 mg of active sodium thiosulfate to neutralize chlorine. Bags also feature a write-on strip and markings for 100 or 300 mL measurements.