Indicator: 10 to 200 ppm
Measuring Range:
+ 2 to 5 ppm, Number of Pump Strokes 2
+ 5 to 200 ppm, Number of Pump Strokes 1
+ 200 to 500 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Gray
Reaction Principle: C6H5Cl+ I2O5 + H2S2O7 → I2
Coefficient of Variation: 15% (for 5 to 50 ppm), 10% (for 50 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 2 to 5 ppm |
5 to 200 ppm |
200 to 500 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
| 1.5 minutes per pump stroke |
1 minute |
|
| Detecting Limit |
0.2 ppm (n=2) |
| Colour Change |
White → Gray |
| Reaction Principle |
C6H5Cl+ I2O5 + H2S2O7 → I2 |
| Coefficient of Variation |
15% (for 5 to 50 ppm), 10% (for 50 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 |
| Carbon monoxide |
 0.1% |
No (2 layers) |
Pale brown (whole layer) |
| Acetylene, Hexane, Ethylene |
0.2% |
No (2 layers) |
Pale brown (whole layer) |
| Alcohols, Ketones |
1% |
+ |
No |
| Esters |
0.2% |
+ |
No |
| Aromatic hydrocarbons |
|
+ |
Gray |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 10 ppm(2014) |
- |
1.3 to 9.6% |
