Ozone

NO.18L
O3
Performance
Measuring Range
0.025 to 0.05 ppm 0.05 to 0.6 ppm 0.6 to 3 ppm
Number of Pump Strokes
10 5 1
Correction Factor
1/2 1 5
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.01 ppm (n=10)
Colour Change Blue → White
Reaction Principle 2 O3 + C16H10N2O2 → 2C8H5NO2 + 2O2
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 at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Bromine 1 ppm + White
Hypochlorous acid   + White
Nitrogen dioxide 1 ppm + White
Oxidant   + White
Chlorine 10 ppm +
(Bleaching)
unclear demarcation
Water vapour 100% relative humdity + unclear demarcation
Calibration gas generation Ozone generater
TLV-TWA TLV-STEL Explosive range
0.08 ppm - -


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