| N2H4 |
 |
Performance
| Measuring Range |
| 0.05 to 0.1 ppm |
0.1 to 2.0 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.01 ppm (n=10) |
| Colour Change |
Pink → Yellow |
| Reaction Principle |
N2H4 + H2SO4 → (NH3)2SO4 |
| Coefficient of Variation |
10% (for 0.1 to 0.5 ppm), 5% (for 0.5 to 2 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Humidity correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Amines & Ammonia |
|
+ |
Yellow |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Dimethyl hydrazine |
Factor:1 |
5 |
0.1 to 2 ppm |
| Methyl hydrazine |
Factor: 6 |
5 |
0.6 to 12 ppm |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.01 ppm |
- |
2.9 to 98% |
