Hach - Model CN-66T -Chlorine (Total) Test Kit, Color Disc, 0-3.4 mg/L, 100 Tests

Quickly and accurately measure total chlorine levels in the field or in the lab. Many Hach chlorine Tests have been accepted by the U.S. EPA for reporting purposes. Verify acceptance with your local regulatory agency. Uses powder DPD reagent that reacts with chlorine more quickly than tablet-form DPD, giving more accurate results. Powder DPD also has a considerable advantage over orthotolidine, a hazardous substance sometimes used as a chlorine test reagent. Kits are manufactured by Hach to ensure compliance with stringent quality control standards.