
Gastec 161 便携式气体检测管乙醚检测管(C2H5)2O(0.04~1.0%)
制造商: Gastec Model: 161 - 联系
Indicator: 0.04 ~ 1.0%
Measuring Range: 0.04 ~ 1.0%, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellowish brown → Dark green
Reaction Principle: (C2H5)2O+ Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 10% (for 0.04 to 0.2 %), 5% (for 0.2 to 1.0 %)
Nr. of tests: 10
Pump: GV-100S/110S
Measuring Range | 0.04 to 1.0% |
Number of Pump Strokes | 1 |
Correction Factor | 1 |
Sampling Time | 1.5 minutes per pump stroke |
Detecting Limit | 0.001% (n=1) |
Colour Change | Yellowish brown → Dark green |
Reaction Principle | (C2H5)2O+ Cr6+ + H2SO4 → Cr3+ |
Coefficient of Variation | 10% (for 0.04 to 0.2 %), 5% (for 0.2 to 1.0 %) |
Shelf Life | 3 Years |
Corrections for temperature & humidity | Temperature correction is necessary |
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Propane | ![]() |
+ | Dark green (whole layer)(![]() |
Alcohols, Esters, Ketones | + | Dark green | |
Aromatic HCs. | ![]() |
+ | Dark green(![]() |
Hydrogen sulphide | ![]() |
+ | Green(![]() |
sulphur dioxide | ![]() |
+ | Green(![]() |
Acetylene | ![]() |
+ | Dark green (whole layer)(![]() |
Substance | Correction Factor | No. of pump strokes | Measuring Range |
Isopropyl ether | 0.45 | 2 | 0.018 to 0.45% |
Methyl ether | 0.85 | 1 | 0.034 to 0.85% |
Tetrahydrofuran | 1.4 | 1 | 0.056 to 1.4% |
Toluene | by scale | 1 | 0.02 to 0.8% |
Calibration gas generation | Static gas dilution method |
TLV-TWA | TLV-STEL | Explosive range |
400 ppm (2014) | 500 ppm (2014) | 1.9 to 36% |
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