Phenol 1/b, 1 - 20 PPM, (8101641)
Phenol 1/b, 1 - 20 PPM, Part # 8101641, 10 Tests
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
C6H5OH + Ce(SO4)2 + H2SO4 brown grey reaction product
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.
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.