Isobutyl alcohol |
NO.116 |
| iCH3j2CHCH2OHii-C4H4OHj |  |
 |
Performance
| Measuring Range | 10 to 150 ppm |
| Number of Pump Strokes | 2 |
| Correction Factor | 1 |
| Sampling Time | 3 minutes per pump stroke |
| Detecting Limit | 1 ppm (n=2) |
| Colour Change | Yellow → Pale blue |
| Reaction Principle | (CH3)2CHCH2OH +Cr6++ H3PO4 →Cr3+ |
| Coefficient of Variation | 15% (for 5 to 50 ppm), 10% (for 50 to 150 ppm) |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Temperature 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 |
| Alcohols | + | Pale blue |
| TLV-TWA | TLV-STEL | Explosive range |
| 50 ppm | - | 1.7 to 10.6% |
