Gastec 211H Ion Sulphide S2- detector tube (10 ~ 100 ppm)
ManufacturerGastec(View more products from this manufacturer)
Model211H
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Indicator: 10 ~ 100 ppm
Measuring Range: 10 ~ 100 ppm
Sampling Time: 2 minute
Colour Change: White → Brown
Reaction Principle: S2- + Pb(CH3COO)2→ PbS
Nr. of tests: 10
Performance
| Measuring Range | 10 to 100 ppm |
| Sampling Time | 2 minutes |
| Detecting Limit | 1 ppm |
| Colour Change | White → Brown |
| Reaction Principle | S2- + Pb(CH3COO)2→ PbS |
| 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 | Changes colour by itself to |
| Cl- | ≧ 15000 ppm | + | No |
| CrO42- | ≧ 100 ppm |  |
Yellow |
| CO32- | ≧ 500 ppm | + | No |
| SO32- | ≧ 100 ppm | |
No |
| S2O32- | ≧ 100 ppm | + | No |
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