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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