Application Range
Standard Measuring Range: 0.1 to 2 ppm
Number of Strokes n: 20
Time for Measurement: approx. 5 min
Standard: ± 15 to 20 %
Color Change: white -› yellow
Ambient Operating Conditions
Temperature: 10 to 40 °C
Absolute Humidity: 10 mg H2O / L
Reaction Principle
a) F2 + MgCI2 -> CI2 + Mg F2
b) Cl2 + o-tolidine -> yellow reaction product
Cross Sensitivity
Nitrogen dioxide, chlorine and chlorine dioxide are indicated, but with different sensitivities
Extension of the Measuring Range
Using n = 40, divide the reading by 2; the measuring range will be 0.05 to 1 ppm.