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Chlorine tests are now available for all requirements of works control and field testing, ranging from the simple determination of free available chlorine to the differential analysis of complex mixtures.
The Principle tablets of the DPD System are numbered 1 to 4 as follows:  DPD No.1  DPD Indicator plus buffer DPD No.2 Stabilised KI for monochloramine activation DPD No3. Stabilised KI for dichloramine activation DPD No4. All reagents in a single tablet Selecting the right procedure for what you want to measure: For Free available Chlorine           Use DPD NO.1 For Free and Combined Chlorine      Use DPD NO,s 1 and DPD No. 3 For Complete Differentiation          Use Tablets 1, 2 and 3 For total  available Chlorine           Use Tablets No. 4 For more information please complete the form below: