Application Range
Standard Measuring Range Qualitative identification of acid gases
Number of Strokes (n) 1
Time for Measurement approx. 3 s
Standard Deviation ± 30 %
Color Change blue violet -› yellow or pink yellow
Ambient Operating Conditions
Temperature: 0 to 40 °C
Absolute Humidity: 3 to 15 mg H2O / L
Reaction Principle
e. g. HCI + pH Indicator pink yellow reaction product
Cross Sensitivity
This tube indicates various acid gases with differing sensitivities and
colors ranging from yellow to pink. It is impossible to differentiate them.