| Nitrogen oxides | NO+NO2 | NO.11L |
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| Performance |
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Measuring Range |
0.04 to 0.08 ppm |
0.08 to 0.2 ppm |
0.2 to 5.0 ppm |
5.0 to 16.5 ppm |
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Number of Pump Strokes |
8 |
4 |
2 |
1 |
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Correction Factor |
0.2 |
0.4 |
1 |
3.3 |
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Sampling Time |
2 minutes per pump stroke |
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Detecting Limit |
0.01ppm (n=8) |
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Color Change |
White |
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Reaction Principle |
Nitrogen oxides is oxidised by nitrogen dioxide, |
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| Coefficient of Variation | 10% (for 0.2 to 1 ppm), 5% (for 1 to 5 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) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Chlorine, Bromine, |
- |
Plus error |
Produce similar stain |
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Sulfur dioxide |
25 ppm |
Minus error |
No discoloration |
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Hydrogen sulfide |
25 ppm |
Minus error |
No discoloration |
| Calibration gas generation | NO2:Permeation tube method NO:High pressure gas cylinder method |
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| TLV-TWA | TLV-STEL | Explosive range |
| NO2:3ppm NO:25ppm |
NO2:5ppm | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Yellowish orange