Indicator: 100-2000 ppm
Measuring Range:
+ 100-2000 ppm, Number of Pump Strokes 1
+ 2000-4000 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minutes per pump stroke
Colour Change: Pale red → yeallow
Reaction Principle:CO2 + 2KOH →K2CO3 + H2O
Coefficient of Variation: 10% (100 ~ 600 ppm), 5% (600 ~ 2000 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Manual tube
Performance
| Measuring Range |
300 to 5000 ppm |
| Number of Pump Strokes |
300 to 5000 ppm (n=1) |
| Correction Factor |
1 |
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
30 ppm (n=1) |
| Colour Change |
Pale blue → Purple |
| Reaction Principle |
CO2 + N2H4 → NH2NHCOOH |
| Coefficient of Variation |
10% (for 300 to 1000 ppm), 5% (for 1000 to 5000 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 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) |
- |
