Instrument

Instrument

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The method used for measuring chlorine residuals uses a chemical compound called DPD (N,N-Diethylparaphenylenediamine), either through the use of a chlorine comparator or photometric instrument (this provides the highest accuracy and precision for measuring chlorine residuals).
This compound can be provided as a tablet or as a liquid. DPD reacts instantly to produce a red color in the presence of chlorine. The subsequent addition of potassium iodide evokes a rapid color response from the combined forms of chlorine (typically chloramines).
chlorine_pocket_photometer_case.tif

Chlorine Photometer, Handheld, 0-10ppm

QC700
chlorine_dioxide_pocket_photometer.tif

Chlorine Dioxide Photometer, Handheld, 0-10ppm

QC700CD
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