Toluene Detection Tubes (5 to 690 ppm)
Gastec Detection Tube No. 122 measures Toluene with a Range of 5 to 690 ppm.
- Measuring Range:
- 5 to 10 ppm
- (10) to 300 ppm
- 300 to 690 ppm
- Number of Pump Strokes: 2, 1, 1/2
- Correction Factor: 1/2, 1, 2.3
- Sampling Time: 1.5 minutes per pump stroke
- Detecting Limit: 1 ppm (n=2)
- Changes from White to Brown
- Corrections for temperature & humidity: Unnecessary
- Relative Standard Deviation: 10% (for 10 to 100 ppm), 5% (for 100 to 300 ppm)
- Reaction Principle: C6H5CH3 + I2O5 + H2SO4 → I2
- 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 |
| Xylene |
≧ 1/5 |
+ |
Brown |
| Acetylene |
≧ 2000 ppm |
+ (Two layers) |
Pale brown (whole layer) |
| Carbon monoxide |
≧ 1000 ppm |
+ (Two layers) |
Pale brown (whole layer) |
| Hexane |
≧ 2000 ppm |
+ (Two layers) |
Pale brown (whole layer) |
| Benzene |
≧ 1/5 |
+ |
Pale yellow |
Other substance measurable with this detector tube:
| Substance: |
Correction Factor: |
No. of Pump Strokes: |
Measuring Range: |
| Ethyl benzene |
1.1 |
1 |
11 to 330 ppm |
Toluene Detection Tubes (5 to 690 ppm)
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