| Measuring Range |
| 0.63 to 1.25 ppm |
1.25 to 2.5 ppm |
2.5 to 50 ppm |
50 to 100 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
3 minutes per pump stroke |
| Detecting Limit |
0.3 ppm (n=4) |
| Colour Change |
Blue → Yellow |
| Reaction Principle |
CS2 + CrO3 + H2S2O7 → SO2 + CO2
SO2 + BaCl2 + H2O → BaSO3 + 2HCl
HCl + Base → Chlorides |
| Coefficient of Variation |
10% (for 2.5 to 10 ppm), 5% (for 10 to 50 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary |
| Store the tubes at cool and dark place. |
