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The CHECKIT Comparator is a compact handy colorimeter unit which is suitable for both mobile and static analysis work.
CHECKIT Comparator is a colorimetric rapid test for easy determination of Free Chlorine, Total Chlorine, Chlorine Dioxide or Ozone concentrations that can be used as an indication measurement for our amperometric measuring systems. Naturally, regarding resolution and accuracy, the rapid test does not come close to the Krypton systems, and it cannot replace a fotometric measurement. However, it provides a quick orientation and can therefore prove helpful during installation or routine comparison.
The CHECKIT Comparator comes in a robust plastic casing with all necessary equipment.


  •  Drinking Water / Beverages
  •  Cooling water
  •  Disinfection


Each CHECKIT Comparator contains a Comparator, a colour Disc, 2 cells, stirring rod, tablet reagents for 30 tests and a mulit language operation manual in a plastic box.

Technical data

Measuring parameter


Free Chlorine 0.0.. 4.0 mg/l
Total Chlorine 0.0.. 4.0 mg/l
Chlorine Dioxide 0.01.. 0.2 mg/l
Ozone 0.. 1 mg/l

Assembly version



Article number

Set CHECKIT Comparator Cl2 Total and Free Chlorine 0 .. 4 mg/l 79500003K
Set CHECKIT Comparator ClO2 Chlorine Dioxide 0,01 .. 0,2 mg/l 79500004K
Set CHECKIT Comparator O3 Ozone 0 .. 1 mg/l 79500005K

When it comes to the online measurement of pH, ORP, conductivity, Chlorine, Ozone, or Chlorine dioxide, we leave nothing to chance. Because for more than 60 years we have been developing solutions that are ideally tailored to the needs and requirements of our customers.

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