Indicator: 0.1~0.6ppm
Measuring Range:
+ 0.025 to 0.05 ppm, Number of Pump Strokes 2
+ (0.05) to 0.6 ppm, Number of Pump Strokes 1
+ 0.6 to 1.2 ppm, Number of Pump Strokes 1/2
Sampling Time: 2 minute per pump stroke
Colour Change: White → Pale Green
Coefficient of Variation: 10% (for 0.05 to 0.2 ppm), 5% (for 0.2 to 0.6 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 0.025 to 0.05 ppm |
(0.05) to 0.6 ppm |
0.6 to 1.2 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
2 minute per pump stroke |
| Detecting Limit |
0.005 ppm (n=2) |
| Colour Change |
White → Pale Green |
| Reaction Principle |
Chlorine dioxide oxidises the indicatorto produce pale green discolouration. |
| Coefficient of Variation |
10% (for 0.05 to 0.2 ppm), 5% (for 0.2 to 0.6 ppm) |
| Shelf Life |
1 Year |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Ammonia |
|
No |
No |
| Carbon monoxide, Carbon dioxide |
|
No |
No |
| Hydrogen chloride |
|
No |
No |
| sulphur dioxide |
|
No |
No |
| Nitrogen dioxide |
|
+ |
Pale green |
| Halogen gases |
|
+ |
Pale green |
| Hydrogen sulphide |
|
No |
No |
| Organic vapours |
|
No |
No |
| Calibration gas generation |
Permeation tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 0.1 ppm(2014) |
0.3 ppm(2014) |
- |
