Chlorine Dioxide

NO.23M
ClO2
Performance
Measuring Range
0.1 to 0.5 ppm 0.5 to 5 ppm 5 to 10 ppm
Number of Pump Strokes
2 to 5 1 1/2
Correction Factor
1/2 to 1/5 1 2
Sampling Time 1 minute per pump stroke
Detecting Limit 0.05 ppm (n=5)
Colour Change White → Pale pink
Reaction Principle Chlorine dioxide oxidises the indicator to produce Pale pink discolouration.
Coefficient of Variation 10% (for 0.05 to 0.2 ppm), 5% (for 0.2 to 0.6 ppm)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes in dark and cool place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Nitric oxide   + Pale pink
Ozone   + Pale pink
Nitrogen dioxide   + Pale pink
Chlorine   + Pale pink
Bromine, Iodine   + Pale pink
Calibration gas generation Permeation tube method
TLV-TWA TLV-STEL Explosive range
0.1 ppm 0.3 ppm -


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