Gastec 102L Quick-measuring Detector tubes Hexane CH3（CH2）4CH3 (4-1200ppm)
ManufacturerGastec(View more products from this manufacturer)
Model102L
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Indicator: 50 to 1200 ppm
Measuring Range:
+ 4 to 50 ppm, Number of Pump Strokes 5
+ 50 to 1200 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minutes per pump stroke
Colour Change: Orange → Dark green
Reaction Principle: CH3(CH2)4CH3 + K2Cr2O7 + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 50 to 400 ppm), 5% (for 400 to 1200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1.5 minutes per pump stroke | ||
| Detecting Limit | 1 ppm (n=5) | ||
| Colour Change | Orange → Dark green | ||
| Reaction Principle | CH3(CH2)4CH3 + K2Cr2O7 + H2SO4 → Cr3+ | ||
| Coefficient of Variation | 10% (for 50 to 400 ppm), 5% (for 400 to 1200 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, | + | Dark brown | |
| Aromatic HCs | + | Dark green | |
| Alcohols, Esters, Ethers | + | Dark green | |
| Hydrogen sulphide | + | Dark brown | |
Organic solvents ( C3) |
+ | Dark green | |
| sulphur dioxide | + | Dark green |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Acrylonitrile | Factor: 12 | 1 | 0.06 to 1.14% |
| Tert-Butyl alcohol | Factor: 10 | 2 | 0.05 to 1.2% |
| Chlorocyclohexane | Factor: 1 | 2 | 50 to 1200 ppm |
| Cyclohexane | Factor: 1.2 | 1 | 60 to 1440 ppm |
| Tube 102L Reading (n=2) | 50 | 100 | 200 | 400 | 600 | 800 | 1000 | 1200 |
| Diisobutyl Ketone Conc. (%) | 0.2 | 0.3 | 0.5 | 0.7 | 0.8 | 0.9 | 1.0 | 1.05 |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| 50 ppm(2014) | - | 1.1 to 7.5% |
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