Performance
| Measuring Range |
1 to 100 ppm |
| Sampling Hours |
1 to 10 hours |
| Detecting Limit |
0.5 ppm (10 hours) |
| Colour Change |
Yellow → Purple |
| Reaction Principle |
HCl + Base Chloride |
| Coefficient of Variation |
10% (for 10 to 100 ppm-hr) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Temperature correction is necessary
Humidity correction is necessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Chlorine |
1/5 |
+ |
Bleaches zero zone |
| Nitric acid |
1/5 |
+ |
Purple |
| Hydrogen fluoride |
1/1 |
+ |
Purple |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
Measuring Range |
| Nitric acid |
0.8 |
0.8 to 80 ppm |
| Hydrogen fluoride |
2.5 |
2.5 to 250 ppm |
| Calibration gas generation |
Diffusion tube method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
C 2 ppm |
- |
