Indicator: 0.25~3.0%
Measuring Range:
+ 0.13 to 0.25%, Number of Pump Strokes 2
+ 0.25 to3%, Number of Pump Strokes 1
+ 3 to 6%, Number of Pump Strokes 1/2
Sampling Time: 1.5 minutes per pump stroke
Colour Change: White → Purple
Reaction Principle: CO2 + N2H4 → NH2NHCOOH
Coefficient of Variation: 10% (for 0.25 to 1 %), 5% (for 1 to 3 %)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Manual tube
Performance
| Measuring Range |
| 0.13 to 0.25% |
0.25 to3% |
3 to 6% |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
0.025% (n=2) |
| Colour Change |
White → Purple |
| Reaction Principle |
CO2 + N2H4 → NH2NHCOOH |
| Coefficient of Variation |
10% (for 0.25 to 1 %), 5% (for 1 to 3 %) |
| 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 colour by itself to |
| Ammonia |
|
No |
No |
| Carbon Monoxide |
|
No |
No |
| Chlorine |
|
No |
No |
| Hydrogen chloride |
|
No |
No |
| Nitrogen oxides |
|
No |
No |
| sulphur dioxide |
|
No |
No |
| Amines |
|
No |
No |
| Organic solvents |
|
No |
No |
| Calibration gas generation |
High pressure gas cylinder method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 5000 ppm(2014) |
30000 ppm(2014) |
- |
