COD analyzer Elox100™


Our goal is to continuously update our product portfolio in order to continue to offer you in three major application areas: environmental monitoring, municipal facilities and industry reliable analysers of consistently high quality. As we always want to offer you the best solution, it is necessary that older analysers are replaced by successor products after a long period of continuous availability. 

Furthermore, there is still the possibility to get information about the ELOX100.

For successor or substitute products, please inform yourself here.

COD Analyzer for Low Particle Density Water

The Elox100 of the LAR Process Analysers AG is an online COD analyzer for the determination of chemical oxygen demand (COD) in wastewater treatment plants or in the process industry.

Features & Benefits

  • Measurement range: 1 – 100,000 mg/l COD
  • Response time: < 4 minutes
  • Electrochemical oxidation
  • COD monitoring
  • Easy to maintain and operate
  • High oxidation capacity
  • No chloride disturbances
  • No memory effects
COD Analyzer Elox100


LAR’s chemical oxygen demand analyzer is suitable for a variety of applications and types of water:

  • Water influent
  • Water effluent
  • Industrial wastewater
  • High salt concentrations


Using analyzer options, the measurement system is adaptable for every measurement challenge.

  • FlowSampler


For safe operation in hazardous areas, there are different protection housings available:

  • IP55 (NEMA 13) (Standard)
  • IP65 (NEMA 4X)


The electrochemical oxidation. A clean alternative.

With the patented Lead-Dioxide-Electrode by LAR OH-radicals are produced. Compared to other oxidants OH-radicals have a significantly higher oxidation potential. Thus, hard to oxidize substances can be fast and easily oxidized without using dangerous chemicals.This electrochemical principle is used for our Elox100. During the reaction the electricity produced will be measured, which is proportional to the consumed OH-radicals. The OH-radicals are here again directly related to the COD.

This method offers a fast, simple, accurate and pollution-free alternative to the common dichromate method (wet chemical method).

The Elox100. Ultra quick measurements and maintenance.

The measurement of the COD takes place in less than 4 minutes and therefore it is faster than the convential dichromate method, which requires 2 hours. This speed guarantees that very short peaks can be determined very well during a daily cycle.

The analyser’s availability is over 98%. The weekly service of the COD analyser is about 30 minutes.

Measurement principle of Elox100

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