Stoddard Solvent |
NO.128 |
| @ |  |
 |
Performance
| Measuring Range | 50 to 8000 mg/m3 |
| Number of Pump Strokes | 1 |
| Correction Factor | 1 |
| Sampling Time | 1.5 minutes per pump stroke |
| Detecting Limit | 5 mg/m3 (n=1) |
| Colour Change | White → Brown (ring) |
| Reaction Principle | Stoddard Solvent + I2O5 + H2S2O7 → I2 |
| Coefficient of Variation | 15% (for 50 to 300 mg/m3), 10% (for 300 to 8000 mg/m3) |
| 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 |
| Carbon monoxide | 0.1% | + | Pale brown (whole layer) |
| Acetylene, Hexane, Ethylene | 0.2% | + | Pale brown (whole layer) |
| Alcohols, Ketones,Esters | No | Pale brown (whole layer) | |
| Aromatic hydrocarbons | + | Dark green |
| Calibration gas generation | Vaper pressure method |
| TLV-TWA | TLV-STEL | Explosive range |
| 100 mg/m3 | - | 0.8 % or higher |
