Indicator: 20 to 200 ppm
Measuring Range:
+ 4 to 20 ppm, Number of Pump Strokes 2 to 5
+ 20 to 200 ppm, Number of Pump Strokes 1
+ 200 to 400 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Orange → Pale yellow
Reaction Principle: O3 + Indicator → Chemical reaction compound
Coefficient of Variation: 10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 4 to 20 ppm |
20 to 200 ppm |
200 to 400 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
45 seconds per pump stroke |
| Detecting Limit |
1 ppm (n=5) |
| Colour Change |
Orange → Pale yellow |
| Reaction Principle |
O3 + Indicator → Chemical reaction compound |
| Coefficient of Variation |
10% (for 20 to 60 ppm), 5% (for 60 to 200 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 |
| Hydrogen chloride |
|
No |
Red |
| Hydrogen fluoride |
|
No |
Red |
| Boron trifluoride |
|
No |
Red |
| Phosphine |
|
No |
Red |
| Arsine |
|
No |
Red |
| Chlorine |
|
+ |
Pale yellow |
| Nitrogen dioxide |
|
+ |
Pale yellow |
| Calibration gas generation |
Ozone generater |
| TLV-TWA |
TLV-STEL |
Explosive range |
| *1 |
- |
- |
