Application Range
Standard Measuring Range: 2 to 60 ppm
Number of Strokes n: 1
Time for Measurement: approx. 30 sec
Standard Deviation: ± 5 to 10 %
Color Change: white -> pale brown
Ambient Operating Conditions
Temperature: 0 to 40°C
Absolute Humidity: max 20 mg H2O / L
Reaction Principle
H2S + Pb2+ -> PbS + 2 H+
Cross Sensitivity
Hydrochloric acid, mercaptan and sulfur dioxide in the TLV range does not interfere.
Extension of the Measuring Range
Using n = 2, divide the reading by 2; the measuring range will be 1 to 30 ppm.