Why do I get a chlorine reading with my DPD Chlorine reagents when I know that there is no chlorine present?

Document ID

Document ID TE2128

Published Date

Published Date 08/01/2018
Question
Why do I get a chlorine reading with my DPD Chlorine reagents when I know that there is no chlorine present?
Summary
DPD Reagents
Answer
The DPD reagents will react with any chemicals in the Halogen Group, as well as other oxidants such as Potassium Permanganate and Hydrogen Peroxide. Hach methods will provide a more complete list of interferences using DPD chemistry.