Hydrogen sulphide

NO.4HH
H2S
Performance
Measuring Range
0.1 to 2.0% 2.0 to 4.0%
Number of Pump Strokes
1 1/2
Correction Factor
1 2
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.01% (n=1)
Colour Change Pale Blue → Blackish Brown
Reaction Principle H2S + CuSO4 → CuS + H2SO4
Coefficient of Variation 10% (for 0.1 to 0.6 %), 5% (for 0.6 to 2 %)
Shelf Life 3 Years
Corrections for temperature & humidity Unnecessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
Substance Concentration Interference Change colour by itself to
Ammonia   Two layers
(Dark brown & dark blue)
Dark blue
sulphur dioxide 0.5% No
Mercaptans 1 % + No
Calibration gas generation High pressure gas cylinder method
TLV-TWA TLV-STEL Explosive range
10 ppm 15 ppm 4.0 to 44%


Return to previous viewGo to top of page