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CH3(CH2)4CH3
| Performance |
Measuring Range | 10 to 50 ppm | 50 to 1200 ppm |
Number of Pump Strokes | 5 | 1 |
Correction Factor | 1/5 | 1 |
Sampling Time | 2 minutes per pumpstroke | |
Detecting Limit | 1 ppm (n=5) | |
Color Change | Orange → Darkgreen | |
Reaction Principle | CH3(CH2)4CH3 + K2Cr2O7 + H2SO4 → Cr3+ | |
| Coefficient ofVariation | 10% (for50 to 400 ppm), 5% (for 400 to 1200 ppm) | |
| ShelfLife | 3Years | |
| Correctionsfor temperature & humidity | Unnecessary | |
| Store the tubes at cool and darkplace. | ||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Acetylene,Alcohols | - | Plus error | Produce darkgreen |
Aromatic HCs | - | Plus error | Produce darkgreen |
Esters,Ethers | - | Plus error | Produce darkgreen |
Hydrogensulfide | - | Plus error | Produce darkgreen |
Organicsolvents ( | - | Plus error | Produce darkgreen |
Sulfurdioxide | - | Plus error | Produce darkgreen |
C3)| Othersubstance measurable with this detector tube |
Substance | Correction | No. of PumpStrokes | MeasuringRange |
Acrylonitrile | Factor: 12 | 1 | 0.06 to 1.14% |
Tert-Butylalcohol | Factor: 10 | 2 | 0.05 to 1.2% |
Chlorocyclohexane | Factor: 1 | 2 | 50 to 1200 ppm |
Cyclohexane | Factor: 1.2 | 1 | 60 to 1440ppm |
Tube 102L Reading(n=2) | 50 | 100 | 200 | 400 | 600 | 800 | 1000 | 1200 |
Diisobutyl KetoneConc. (%) | 0.2 | 0.3 | 0.5 | 0.7 | 0.8 | 0.9 | 1.0 | 1.05 |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 50ppm | - | 1.1 to7.5% |