| C5`C10 |
 |
Performance
| Measuring Range |
| 100 to 200 ppm |
200 to 3000 ppm |
|
| Number of Pump Strokes |
|
| Correction Factor |
|
| Sampling Time |
1.5 minutes per pump stroke |
| Detecting Limit |
20 ppm (n=2) |
| Colour Change |
White → Blackish brown |
| Reaction Principle |
Hydorocarbon (C6 + C10) + I2H5 + H2S2O7 → I2
|
| Coefficient of Variation |
10% (for 200 to 1000 ppm), 5% (for 1000 to 3000 ppm) |
| Shelf Life |
3 Years |
| Corrections for temperature & humidity |
Unnecessary |
| Store the tubes at cool and dark place. |
Possible coexisting substances and their interferences
(NOTE)
| Substance |
Concentration |
Interference |
Change colour by itself to |
| Acetylene, Ethylene |
0.1% |
+ |
Blackish brown |
| Carbon monoxide |
0.1% |
+ |
Blackish brown |
| Other organic solvents |
|
+ |
Blackish brown |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of pump strokes |
Measuring Range |
| Decane |
2.0 |
1 or 2 |
200 to 6000 ppm |
| Heptane |
0.9 |
1 or 2 |
90 to 2700 ppm |
| Hexane |
0.8 |
1 or 2 |
80 to 2400 ppm |
| Nonane |
1.3 |
1 or 2 |
130 to 3900 ppm |
| Octane |
1.0 |
1 or 2 |
100 to 3000 ppm |
| Calibration gas generation |
Vaper pressure method |
| TLV-TWA |
TLV-STEL |
Explosive range |
| - |
- |
- |
