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COD-203A

Automatic COD / CSB Analyzer (ISO Certified)

Analyzer and COD measuring device (ISO certified) for determining the Chemical Oxygen Demand.
Measuring Range: Adjustable measurement range between 0 - 20mg/L and 0 - 2000mg/L

Application

The COD-203A has been appreciated by many customers for many years due to its reliability and low maintenance requirements. It reliably determines the Chemical Oxygen Demand (COD) using the potassium permanganate oxidation method. For sample streams with high chloride values, such as seawater, an alternative alkaline measurement method can be selected.
As standard, the COD-203A is designed as a dual-channel device with two measuring streams. It features a variety of comfort functions, a touchscreen, and its low reagent consumption makes it extremely low-maintenance. The necessary chemicals only need to be refilled once a month. A standard flushing system also ensures consistent measurement results.
Additional Information: Mode of Operation
In the CODMn analysis using the potassium permanganate method (CODMn), potassium permanganate is added to oxidize the organic and inorganic compounds in the sample. During the oxidation process, the redox potential of the solution changes as the oxidation reactions occur. The ORP method measures these changes in redox potential. A stable and specific redox potential indicates that the oxidation reaction is complete and that the sample has been fully oxidized. This is important for an accurate determination of the Chemical Oxygen Demand (COD). The ORP method allows real-time monitoring and control of the oxidation process during CODMn analysis.

Vorteile

Reliable and proven ORP measurement method

Titration curves indication via display and printout

Various chemical flushing options are available, depending on the sample stream

Interactive touchscreen control
Output: Analog: 4 - 20mA, alarm contacts; Digital: RS-485, memory card

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