Application Range
Standard Measuring Range: 0.2 to 3 ppm / 3 to 30 ppm
Number of Strokes n: 10 / 1
Time for Measurement: approx. 3 min / 20 sec.
Standard Deviation: ±10 to 15%
Color Change: white -› yellow orange
Ambient Operating Conditions
Temperature: 0 to 40°C
Absolute Humidity: < 15 mg H2O / L
Reaction Principle
Cl2 + o-tolidine ä yellow orange reaction product
Cross Sensitivity
Bromine is indicated with the same sensitivity, but with a paler discoloration. Chlorine dioxide is indicated with different sensitivity.
Nitrogen dioxide is indicated as well, but with a paler discoloration and lower sensitivity.