| Ammonia | NH3 | NO.3H | |
|
|
|||
| Performance |
|
Measuring Range |
0.2 to 1% |
1 to 16% |
16 to 32% |
|
Number of Pump Strokes |
5 - 2 |
1 |
1/2 |
|
Correction Factor |
1/5 to 1/2 |
1 |
2 |
|
Sampling Time |
1 minute per pump stroke |
||
|
Detecting Limit |
0.05% (n=5) |
||
|
Color Change |
Purple |
||
|
Reaction Principle |
Ammonia neutralizes acids to discolor the indicator to yellow. |
||
| Coefficient of Variation | 10% (for 1 to 4 %), 5% (for 6 to 16 %) | ||
| 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 |
|
Hydrazine |
- |
Plus error |
Discolor to yellow stain |
|
Carbon dioxide |
1% or higher |
Minus error |
No discoloration |
|
Amines other than aromatic amines |
- |
Plus error |
Discolor to yellow stain |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
|
Dimethylamine |
1.2 |
1 |
1.2 to 19.2% |
| Calibration gas generation | High pressure gas cylinder method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 25ppm | 35ppm | 15 to 28% |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Yellow