Methyl Mercaptan Detection Tubes (20 to 2700 ppm)
Gastec Detection Tube No. 71H measures Methyl Mercaptan with a Range of 20 to 2700 ppm.
- Measuring Range:
- 20 to 50 ppm
- 50 to 1000 ppm
- 1000 to 2700 ppm
- Number of Pump Strokes: 2, 1, 1/2
- Correction Factor: 0.4, 1, 2.7
- Sampling Time: 45 seconds per pump stroke
- Detecting Limit: 2 ppm (2 pump strokes)
- Changes from White to Yellow
- Corrections for temperature & humidity: Unnecessary
- Reaction Principle: 2CH3SH + PdSO4 → (CH3S)2Pd + H2SO4
- Relative Standard Deviation: 10% (for 50 to 200 ppm), 5% (for 200 to 1000 ppm)
- 3 Year Shelf Life
- Store the tubes at cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Mercaptans |
|
+ |
Yellow |
| Carbon moonoxide |
|
No |
No |
| Ethylene |
|
No |
No |
| Hydrogen sulfide |
≧ 1000 ppm |
+ |
No |
| Nitrogen dioxide |
|
No |
No |
Other substance measurable with this detector tube:
| Substance: |
Correction Factor: |
No. of Pump Strokes: |
Measuring Range: |
| Ethyl mercaptan |
by scale |
1 |
100 to 3800 ppm |
Methyl Mercaptan Detection Tubes (20 to 2700 ppm)
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