Gasoline Detection Tubes (30 to 2000 ppm)
Measures Gasoline with a Range of 30 to 2000 ppm.
- Measuring Range: 30 to 1000 ppm, 1000 to 2000 ppm
- Number of Pump Strokes: 2, 1
- Correction Factor: 1, 2
- Sampling Time: 2 minutes per pump stroke
- Detecting Limit: 5 ppm (2 pump strokes)
- Changes from Yellowish brown to Greenish brown
- Reaction Principle: CnHm + Cr6+ + H2SO4 → Cr3+
- Relative Standard Deviation: 10% (for 30 to 300 ppm), 5% (for 300 to 1000 ppm)
- Corrections for temperature & humidity: Unnecessary
- 3 Year Shelf Life
- Store the tubes at cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Interference |
Changes color by itself to |
| Alcohols |
+ |
Greenish brown |
| Aromatic hydrocarbons |
+ |
Greenish brown |
| Esters, Ethers |
+ |
Greenish brown |
| Organic solvents (≧ C3) |
+ |
Greenish brown |
| Sulfur dioxide |
+ |
Greenish brown |
| Acetylene |
+ |
Blackish brown |
| Hydrogen sulfide |
+ |
Blackish brown |
Other substance measurable with this detector tube:
| Substance:
|
Correction Factor:
|
No. of Pump Strokes:
|
Measuring Range (ppm):
|
| Allyl Chloride |
Factor: 34 |
1/2 |
0.1 to 3.4% |
| Heptane |
Factor: 2
Factor: 1 |
1
2 |
100 to 2000
30 to 1000 |
| Isobutene |
Factor: 22 |
1 |
0.07 to 2.2% |
Gasoline Detection Tubes (30 to 2000 ppm)
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