Indicator: 20 to 300 ppm
Measuring Range:
+ 7 to 20 ppm, Number of Pump Strokes 2
+ 20 to 300 ppm, Number of Pump Strokes 1
+ 300 to 900 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Yellow → Reddish purple
Reaction Principle: Cl2C:CCl2 + PbO2 + H2SO4 → HCl, HCl + Base → Chloride
Coefficient of Variation: 10% (for 20 to 100 ppm), 5% (for 100 to 300 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Catalog
Manual
Performance
| Measuring Range |
| 7 to 20 ppm |
20 to 300 ppm |
300 to 900 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
45 seconds per pump stroke |
| Detecting Limit |
0.5 ppm (n=2) |
| Colour Change |
Yellow → Reddish purple |
| Reaction Principle |
Cl2C:CCl2 + PbO2 + H2SO4 → HCl
HCl + Base → Chloride |
| Coefficient of Variation |
10% (for 20 to 100 ppm), 5% (for 100 to 300 ppm) |
| Shelf Life |
2 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| 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 |
Chlorine, Bromine,
Hydrogen chloride |
|
+ |
Reddish purple |
| 1,1,1-Trichloroethane |
≧ 3000 ppm |
+ |
Reddish purple |
| Trichloroethylene |
|
+ |
Reddish purple |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 25 ppm |
100 ppm |
- |
