Gasoline 0.015-1.2% Detection Tubes
- Detecting Limit - 0.003% (2 pump strokes)
- Color Change - Yellowish brown to Greenish brown
- Corrections for temperature and humidity - Unnecessary
- Relative Standard Deviation - 10% (for 0.03 to 0.1%), 5% (for 0.1% to 0.6%)
- Shelf Life - 3 years
Performance:
| Measuring Range:
|
0.015 to 0.03%
|
0.03 to 0.6%
|
0.6 to 1.2%
|
| Number of Pump Strokes:
|
2 (200 ml)
|
1 (100 ml)
|
1/2 (50 ml)
|
| Correction Factor:
|
1/2
|
1
|
2
|
| Sampling Time:
|
2 min
|
1 min
|
30 sec
|
Gasoline 0.015-1.2% Detection Tubes
Reaction Principle
CnHm + Cr6 + H2SO4 to Cr3+
Possible Coexisting Substances and their Interference:
| Substance:
|
Concentration:
|
Interference:
|
Changes Color by Itself to:
|
| Acetylene
|
≧ 3 %
|
|
Blackish Brown (Whole Layer)
|
| Propane
|
≧ 0.2 %
|
|
Blackish Brown (Whole Layer)
|
| Aromatic Hydrocarbons
|
≧ 500 ppm
|
+
|
Greenish Brown
|
| Alcohols, Esters, Ethers
|
|
+
|
Greenish Brown
|
| Halogenated Hydrocarbons |
≧ 5000 ppm
|
+
|
Greenish Brown
|
| Hydrogen Sulphide
|
≧ 500 ppm
|
+
|
Greenish Brown
|
| Sulphur Dioxide
|
≧ 500 ppm
|
+
|
Green
|
Other substances measurable with this detector tube:
| Substance:
|
Correction:
|
No. of pump strokes:
|
Measuring Range:
|
| Heptane
|
Factor : 2
|
1/2
|
0.6 to 1.2 %
|
|
|
Factor : 1.0
|
1
|
0.03 to 0.6 %
|
|
|
Factor : 0.5
|
2
|
0.015 to 0.03 %
|
| Isooctane
|
Factor : 0.9
|
1
|
0.027 to 0.54 %
|
| Octane
|
Factor : 1.2
|
1
|
0.036 to 0.72 %
|
Gasoline 0.015-1.2% Detection Tubes
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