|
Measuring Range
|
0.25 to 1 ppm
|
1 to 20 ppm
|
20 to 70 ppm
|
|
Number of Pump Strokes
|
4
|
2
|
1
|
|
Correction Factor
|
1/4
|
1
|
3.5
|
|
Sampling Time
|
1.5 minutes per pumpstroke
|
|
Detecting Limit
|
0.05 ppm (n=4)
|
|
Color Change
|
Yellow →Purple
|
|
Reaction Principle
|
CH2:CHCl + PbO2 +H2SO4 →HCl
HCl + Base → Purple
|
| Coefficient ofVariation |
10% (for1 to 5 ppm), 5% (for 5 to 20 ppm) |
| ShelfLife |
2Years |
Correctionsfor
temperature & humidity |
Temperature correction is necessary |
| Store the tubes inthe refrigerator to keep at 10oC (50oF) orbelow. |
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