Indicator: 0.1 to 2.0%
Measuring Range:
+ 0.1 to 2.0%, Number of Pump Strokes 1
+ 2.0 to 4.0%, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
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 %)
Nr. of tests: 10
Pump: GV-100S/110S
Detail
Catalog
Manual
Manual tubes
Performance
| Measuring Range |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| 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 |
| 1 ppm |
5 ppm |
4.0 to 44% |
