| Carbon monoxide | CO | NO.1LK |
|
|
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| Performance |
|
Measuring Range |
5 to 100 ppm |
100 to 300 ppm |
300 to 600 ppm |
|
Number of Pump Strokes |
3 |
1 |
1/2 |
|
Correction Factor |
1 |
3 |
6 |
|
Sampling Time |
3 minutes per pump stroke |
||
|
Detecting Limit |
0.5 ppm (n=3) |
||
| Color Change |
white |
||
|
Reaction Principle |
Carbon monoxide reduces iodine pentoxide to librateiodine, which is pale brown for lower range and pale green for higher range of the reagent layer. |
||
| Coefficient of Variation | 10% (for 5 to 20 ppm), 5% (for 20 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 color by itself |
|
Ammonia |
- |
No effect |
No discoloration |
|
Carbon dioxide |
- |
No effect |
No discoloration |
|
Hydrogen sulfide |
- |
No effect |
No discoloration |
|
Nitrogen oxides |
- | No effect |
No discoloration |
|
Sulfur dioxide |
- |
No effect |
No discoloration |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 25ppm | - | 12.5 to 74% |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale brown