Lovibond Tintometer MD 100 Manual De Instrucciones página 12

Chemical Method
DPD
Appendix
Interferences
Persistant Interferences
1. All oxidising agents in the samples react like bromine, which leads to higher results.
2. Concentrations above 22 mg/l Bromine can lead to results within the measuring
range of up to 0 mg/l. In this case, the water sample must be diluted. 10 ml of the
diluted sample should be mixed with the reagent and the measurement taken again
(plausibility test).
Derived from
US EPA 330.5 (1983)
APHA Method 4500 Cl-G
alternative reagent, used instead of DPD No.1/No.3 in case of turbidity in the water sample caused by high
e)
concentration of calcium and/or high conductivity
EN Method Reference Book 1.0
Bromine T / M80
EN
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