ISO COD Reagents

The ISO method 15705 requires the use of mercuric sulfate (HgSO4) to mitigate the interference from chloride ions. This is a common requirement for wastewater treatment plants and food manufacturing facilities, which tend to have higher concentrations of chloride present in their effluent. The ISO COD reagents are available in a 0 - 150 ppm low range and 0 - 1000 ppm medium range.

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