Features

• The DPD reagent is a powder reagent and is a package type. There are standard 100 times reagent and economical 500 times reagent.
• DPD reagent also contains pH buffer, so the pH of the test solution can be adjusted and stable color measurement can be performed. (Stable measurement is possible if the pH is 3~ 10.)
• When the optional potassium iodide reagent is used together, the total residual chlorine can be measured, and the combined residual chlorine concentration can be determined from the difference between the total residual chlorine concentration and the free residual chlorine concentration.