| Measuring Range |
| 10 to 20 ppm |
20 to 500 ppm |
500 to 1000 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
2.5 ppm (n=2) |
| Colour Change |
Yellow → Red |
| Reaction Principle |
Hydrogen chloride reacts with indicator to produce red stain.
HCl + Indicator → Chemical reaction compound |
| Coefficient of Variation |
10% (for 20 to 100 ppm), 5% (for 100 to 500 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
500 ppm)
