Application Range
Standard Measuring Range: 1 to 20 ppm
Number of Strokes n: 20
Time for Measurement: approx. 5 min
Standard Deviation: ± 10 to 15 %
Color Change: yellow -> brown grey
Ambient Operating Conditions
Temperature: 10 to 30 °C
Absolute Humidity: 1 to 18 mg H2O / L
Reaction Principle
C6H5OH + Ce(SO4)2 + H2SO4 -> brown grey reaction product
Cross Sensitivity
Cresols are also indicated, but with different sensitivities. To determine m-cresol multiply the indication by 0.8. Benzene, toluene and other
aromatics without the heteroatoms are not indicated. Aliphatic hydrocarbons and alcohols are not indicated.
Additional Information
At a temperature of 0 °C the resulting indication must be multiplied by 1.3, at a temperature of 40 °C it must be multiplied by 0.8.
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