Application Range
Standard Measuring Range: 0.25 to 5 ppm
Number of Strokes n: 20 to 1
Time for Measurement: max. 5 min
Standard Deviation: ± 30%
Color Change: white -› pink
Ambient Operating Conditions
Temperature: 5 to 40°C
Absolute Humidity: < 50 mg H2O / L
Reaction Principle
a) CICN + pyridine -> glutaconaldehyde cyanamide
b) Glutaconaldehyde + barbituric acid -> pink reaction product
Cross Sensitivity
Cyanogen bromide is indicated as well, but with a different sensitivity. Calibration data is not available.
Additional Information
Before performing the measurement the reagent ampoule must be broken and the liquid transferred onto the indicating layer so that it is completely saturated.