Carbon dioxide |
NO.2LL |
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Measuring Range | 300 to 5000 ppm |
Number of Pump Strokes | 300 to 5000 ppm (n=1) |
Correction Factor | 1 |
Sampling Time | 2 minutes per pump stroke |
Detecting Limit | 30 ppm (n=1) |
Colour Change | Pale blue → Purple |
Reaction Principle | CO2 + N2H4 → NH2![]() ![]() |
Coefficient of Variation | 10% (for 300 to 1000 ppm), 5% (for 1000 to 5000 ppm) |
Shelf Life | 3 Years |
Corrections for temperature & humidity | Unnecessary |
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Ammonia | No | No | |
Carbon Monoxide | No | No | |
Chlorine | No | No | |
Hydrogen chloride | No | No | |
Nitrogen oxides | No | No | |
sulphur dioxide | No | No | |
Amines | No | No | |
Organic solvents | No | No |
Calibration gas generation | High pressure gas cylinder method |
TLV-TWA | TLV-STEL | Explosive range |
5000 ppm | 30000 ppm | - |