Indicator: 5 ~ 50 ppm
Measuring Range: 5 ~ 50 ppm, Number of Pump Strokes 2
Sampling Time: 3 minutes per pump stroke
Colour Change: Yellow → Blackish brown
Reaction Principle: CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3
Coefficient of Variation: 15% (for 5 to 10 ppm), 10% (for 10 to 50 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Detail
Performance
Measuring Range | 5 to 50 ppm |
Number of Pump Strokes | 2 |
Correction Factor | 1 |
Sampling Time | 3 minutes per pump stroke |
Detecting Limit | 1 ppm (n=2) |
Colour Change | Yellow → Blackish brown |
Reaction Principle | CO + Na2Pd(SO3)2 → Pd + CO2 + SO2 + Na2SO3 |
Coefficient of Variation | 15% (for 5 to 10 ppm), 10% (for 10 to 50 ppm) |
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 |
Acetylene | 1/50 time | + | Dark brown |
sulphur dioxide | 1/10 time | + | Dark brown |
Nitrogen dioxide | 40 ppm | + | Red |
Hydrogen sulphidet | 1/5 time | + | Dark brown |
Calibration gas generation | High pressure gas cylinder method |
TLV-TWA | TLV-STEL | Explosive range |
25 ppm(2014) | - | 12.5 to 74% |
- 质量承诺
- 正品保修
- 送货到家
- 交易简单化