详情介绍：
氨气检测管3L Ammonia NH3 Ammonia No.3L
NH3
| Performance |
Measuring Range | 0.5 to1 ppm | 1 to 30 ppm | 30 to 78 ppm |
Number of PumpStrokes | 2 | 1 | 1/2 |
Correction Factor | 1/2 | 1 | 2.6 |
Sampling Time | 1 seconds perpump stroke | ||
Detecting Limit | 0.2 ppm (n=2) | ||
Color Change | Pink → Yellow | ||
Reaction Principle | 2NH3 + H2SO4 → (NH4)2SO4 | ||
| Coefficient ofVariation | 10% (for5 to 20 ppm), 5% (for 20 to 100 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Carbondioxide | 1% | - | No |
Hydrazine | - | + | Yellow |
Amines | 1/15 | + | Yellow ( 5ppm) |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 25ppm | 35ppm | 15 to 28% |
