| Ethylether | (C2H5)2O | NO.161 | |
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| Performance |
|
Measuring Range |
0.04 to 1.0% |
|
Number of Pump Strokes |
1 |
|
Correction Factor |
1 |
|
Sampling Time |
2 minutes per pump stroke |
|
Detecting Limit |
0.001% (n=1) |
|
Color Change |
Yellowish brown |
|
Reaction Principle |
Ethyl ether reacts with cromic acid to form chromic sulfate, |
| 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. | |
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Propane |
0.2% |
Plus error |
Produce dark green for whole layer |
|
Alcohols, Esters, Ketones |
- |
Plus error |
Produce greenish brown |
|
Aromatic HCs. |
500 ppm |
Plus error |
Produce greenish brown |
|
Hydrogen sulfide |
500 ppm |
Plus error |
Produce green stain |
|
Sulfur dioxide |
500 ppm |
Plus error |
Produce green stain |
|
Acetylene |
0.3% |
Plus error |
Greenish brown for whole layer |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
|
Isopropyl ether |
0.45 |
2 |
0.018 to 0.45% |
|
Methyl ether |
0.85 |
1 |
0.03 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 |
| 400ppm | 500ppm | 1.9 to 48% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Greenish brown