Hydrocarbons (Higher Class) Detection Tubes (100 to 3000 ppm)
Gastec Detection Tube No. 105 measures Hydrocarbons (Higher Class) with a Range of 100 to 3000 ppm.
- Measuring Range: 100 to 200 ppm, 200 to 3000 ppm
- No. of Pump Strokes: 2, 1
- Correction Factor: 1/2, 1
- Sampling Time: 1.5 minutes per pump stroke
- Detecting Limit: 20 ppm (2 pump strokes)
- Color Change: White to Blackish Brown
- Corrections for temperature & humidity: Unnecessary
- Reaction Principle: Hydrocarbon (C6 + C10) + I2O5 + H2S2O7 → I2
- Relative Standard Deviation: 10 % (for 200 to 1000 ppm), 5 % (for 1000 to 3000 ppm)
- 3 Year Shelf Life
- Store the tubes at a cool and dark place.
Posible coexisting substances and their interferences:
Substance |
Concentration |
Interference |
Changes color by itself to |
Acetylene, Ethylene |
≧ 0.1% |
+ |
Blackish brown |
Carbon monoxide |
≧ 0.1% |
+ |
Blackish brown |
Organic solvents |
|
+ |
Blackish brown |
Substances measurable with this detector tube:
Substance: |
Correction Factor: |
No. of Pump Strokes: |
Measuring Range: (ppm) |
Octane |
1.0 0.5 |
1 2 |
200 to 3000 100 to 200 |
Decane |
2 1 |
1 2 |
400 to 6000 200 to 400 |
Nonane |
1.3 0.65 |
1 2 |
260 to 3900 130 to 260 |
Hexane |
0.8 0.4 |
1 2 |
160 to 2400 80 to 160 |
Heptane |
0.9 0.45 |
1 2 |
180 to 2700 90 to 180 |
Hydrocarbons (Higher Class) Detection Tubes (100 to 3000 ppm)
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