Indicator: 0.5 to 5 ppm
Measuring Range:
+0.1 to 0.5 ppm , Number of Pump Strokes 2 to
+ 0.5 to 5 ppm, Number of Pump Strokes 1
+ 5 to 10 ppm, Number of Pump Strokes 1/2
Sampling Time: 1 minute per pump stroke
Colour Change: White → Pale pink
Coefficient of Variation: 10% (for 0.05 to 2 ppm), 5% (for 2 to 5 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.1 to 0.5 ppm |
0.5 to 5 ppm |
5 to 10 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.05 ppm (n=5) |
| Colour Change |
White → Pale pink |
| Reaction Principle |
Chlorine dioxide oxidises the indicator to produce Pale pink discolouration. |
| Coefficient of Variation |
10% (for 0.05 to 2 ppm), 5% (for 2 to 5 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes in dark and cool place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Nitric oxide |
|
+ |
Pale pink |
| Ozone |
|
+ |
Pale pink |
| Nitrogen dioxide |
|
+ |
Pale pink |
| Chlorine |
|
+ |
Pale pink |
| Bromine, Iodine |
|
+ |
Pale pink |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.1 ppm(2014) |
0.3 ppm(2014) |
- |
