TRUE TOC-process analysers continuously measure the sum of dissolved organic carbon and organic particles in waste water. Unfortunately, most process TOC-analysers have trouble with waste water samples that have a high load of suspended organic particles. Firstly, these organic particles, e.g. slime, algae's, grease and other difficult particulates, tend to block the so-called wetted parts of an analyser. Sample filtration is used to avoid this problem. However, the TOC outcome of such a TOC-analyser system measured is far too low.
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