Gastec 161L Quick-measuring Detector tubes Ethylether (C2H5)2O (10~1200ppm)
ManufacturerGastec(View more products from this manufacturer)
Model161L
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Indicator: 10 to 400 ppm
Measuring Range:
+ 10 to 400 ppm, Number of Pump Strokes 2
+ 400 to 1200 ppm, Number of Pump Strokes 1
Sampling Time: 2 minute per pump stroke
Colour Change: Yellow → Pale blue
Reaction Principle: (C2H5)2O+ Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 10 to 100 ppm), 5% (for 100 to 400 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 | 2 minutes per pump stroke | ||
| Detecting Limit | 2 ppm (n=2) | ||
| Colour Change | Yellow → Pale blue | ||
| Reaction Principle | (C2H5)2O+ Cr6+ + H2SO4 → Cr3+ | ||
| Coefficient of Variation | 10% (for 10 to 100 ppm), 5% (for 100 to 400 ppm) | ||
| Shelf Life | 2 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 | |
| Esters | + | Pale blue | |
| Ketones | + | Pale blue |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 400 ppm(2014) | 500 ppm(2014) | 1.9 to 36% |
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