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Chlorine HR 2 PP / M112
Chemical Method
DPD
Appendix
Interferences
EN
Persistant Interferences
• All oxidising agents in the samples react like chlorine, which leads to higher results.
Removeable Interferences
• Interference from Copper and Iron (III) are eliminated by the addition of EDTA.
• Concentrations above 10 mg/L Chlorine, in the event of using Powder Packs, can lead
to results within the measuring range of up to 0 mg/L. In this case, the sample must be
diluted with chlorine-free water. 5 ml of the diluted sample should be mixed with the
reagent and the measurement taken again (plausibility test).
Conformity
EN ISO 7393-2
48
EN Method Reference Book 1.0
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