Application Range
Standard Measuring Range: 20 to 100 / 1 to 20 ppm
Number of Strokes n: 2 / 10
Time for Measurement: approx. 2 min / approx. 10 min
Standard Deviation: ± 15 to 20 %
Color Change: yellow -> dark-brown
Ambient Operating Conditions
Temperature: 5 to 40 °C
Absolute Humidity: max. 30 mg H2O / L
Reaction Principle
PH3 + Au3+ -> Au (colloidal)
Cross Sensitivity
Ammonia, hydrogen chloride, hydrogen sulfide and mercaptans are retained in the prelayer. Arsine and stibine are also indicated, however, with less sensitivity.