| Cl2C:CHCl |
 |
Performance
| Measuring Range |
| 1 to 2 ppm |
2 to 25 ppm |
25 to 70 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1 minute per pump stroke |
| Detecting Limit |
0.4 ppm (n=2) |
| Colour Change |
Yellow → Purple |
| Reaction Principle |
Cl2C:CHCl + PbO2 + H2SO4 → HCl
HCl + Basic Compound → Chloride |
| Coefficient of Variation |
10% (for 1 to 5 ppm), 5% (for 5 to 25 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 |
| Nitric oxide, Nitrogen oxides |
|
No |
No |
| Hydrogen chloride, Chlorine, Bromine |
200 ppm |
+ |
Purple |
| Acetone |
|
No |
No |
| Unsaturated halogenated hydrocarbons |
|
+ |
Purple |
| Aromatic hydrocarbons |
100 ppm |
 |
No |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Benzyl chloride |
0.8 |
2 |
1.6 to 20 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| 10 ppm |
25 ppm |
- |
