Ethanol Detection Tubes (50 to 2000 ppm)
Gastec Detection Tube No. 112L measures Ethanol with a Range of 50-2000 ppm.
- Measuring Range: 50 to 100 ppm, 100 to 2000 ppm
- Number of Pump Strokes: 2, 1
- Correction Factor: 1/2, 1
- Sampling Time: 2 minutes per pump stroke
- Detecting Limit: 15 ppm (2 pump strokes)
- Color Change: Pale Vermillon to Pale Blue
- Corrections for temperature & humidity: Temperature correction is necessary
- Reaction Principle: C2H5OH + Cr6+ + H2SO4 → Cr3+
- Relative Standard Deviation: 10% (for 100 to 500 ppm), 5% (for 500 to 2000 ppm)
- 3 Year Shelf Life
- Store the tubes in a cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Alcohols |
|
+ |
Pale blue |
| Acetone |
≦ 1000 ppm |
No |
No (≦ 1000 ppm) |
| Ethyl acetate |
≦ 500 ppm |
No |
No (≦ 500 ppm) |
| Toluene |
≦ 300 ppm |
No |
No (≦ 300 ppm) |
| Benzene |
≦ 70 ppm |
No |
No |
Ethanol Detection Tubes (50 to 2000 ppm)
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