Indicator:
Measuring Range: 5 to 100 ppm, Number of Pump Strokes 3
Sampling Time: 2 minutes per pump stroke
Colour Change: White → Pale brown / Pale green (may produce dual layers)
Reaction Principle: 5CO + I2O5 + H2S2O7 → I2
Coefficient of Variation: 5% (for 5 to 100 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Detail
Performance
Measuring Range | 5 to 100 ppm |
Number of Pump Strokes | 3 |
Correction Factor | 1 |
Sampling Time | 2 minutes per pump stroke |
Detecting Limit | 2 ppm (n=3) |
Colour Change | White → Pale brown / Pale green (may produce dual layers) |
Reaction Principle | 5CO + I2O5 + H2S2O7 → I2 |
Coefficient of Variation | 5% (for 5 to 100 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 |
Hydrogen | ![]() |
![]() |
No discoloration |
Paraffinic hydrocarbons C6 or less (RH0%) | ![]() |
No | Pale brown when higher than 15% |
Ethylene(RH0%) | ![]() |
No | Pale brown when higher than 3% |
Propylene(RH0%) | ![]() |
No | Pale brown when higher than 15% |
Acetylene(RH0%) | ![]() |
No | Pale brown when higher than 250ppm |
Carbon dioxide,Nitrogen oxides | No | No discoloration | |
Hydrogen sulphide | No | No discoloration |
Calibration gas generation | High pressure gas cylinder method |
TLV-TWA | TLV-STEL | Explosive range |
25 ppm | - | 12.5 to 74% |
- 质量承诺
- 正品保修
- 送货到家
- 交易简单化