Typically the DPD method is the standard method for measuring Free and Total Chlorine concentration in water.

The standard procedure involves the creation of a complex between chlorine and DPD (N,N-diethyl-p-phenylenediamine), with subsequent colorimetric measurement. This complex, known as a Wurster Dye, undergoes a distinctive transformation from a colorless state to a vivid pink hue.

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Particle element
Particle element
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A user friendly Chlorine colorimeter for industrial applications.

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