Aniline Detection Tubes (1.25 to 60 ppm)
Gastec Detector Tube No 181 measures Aniline.
- Measuring Range:
- 1.25 to 2.5 ppm - 5 pump strokes
Correction Factor: 1/2
- 2.5 to 30 ppm - 3 pump strokes
Correction Factor: 1
- 30 to 60 ppm - 2 pump strokes
Correction Factor: 2
- Sampling Time: 1 minute per pump stroke
- Changes from Pale Yellow to Pale Green
- Corrections for termperature & humidity: Unnecessary
- Relative Standard Deviation: 10% (for 2.5 to 10 ppm), 5% (for 10 to 30 ppm)
- 3 Year Shelf Life
- Reaction Principle: C6H5NH2 + Cr6+ → Cr3+
- Store the tubes at a cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Aromatic amines |
|
+ |
Pale Green |
| Ammonia |
≧ 1/10 |
+ |
No |
| Other amines |
≧ 1/10 |
+ |
No |
Other substance measurable with this detector tube:
| Substance: |
Correction Factor: |
No. of Pump Strokes: |
Measuring Range: |
| N,N-Dimethylaniline |
Factor:1.0 |
3 |
2.5 to 30 ppm |
| N-methylaniline |
Factor:1.4 |
2 |
3.5 to 42 ppm |
| o-Toluidine |
Factor: 2.0 |
2 |
5 to 60 ppm |
Aniline Detection Tubes (1.25 to 60 ppm)
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