Benzene Detection Tubes 15/a (15 - 420 ppm)
For short-term measurements more than 160 Draeger-Tubes are available to measure the spot concentrations of specific gases. Measurement usually takes between 4 seconds and 15 minutes. The tubes are used either manually with the Draeger-Tube Accuro Pump or automatically with the Draeger X-act 5000.
A wide range of different gases and vapours can be detected and measured, such as:
- Determining and measuring concentration peaks
- Measuring personal exposure in the inhalation area
- Detecting leaks in pipelines, gas installations etc.
- Air analysis in sewers, shafts and confined spaces.
Benzene Detection Tubes 15/a (15 - 420 ppm)
| Standard Measuring Range: |
15 to 420 ppm |
| Number of Strokes (n): |
20 to 2 |
| Time for Measurement: |
approx. 4 min. |
| Standard Deviation: |
±30 % |
| Color Change: |
white ?> red brown |
| Temperature: |
0 to 30° C |
| Absolute Humidity: |
max. 30 mg H2O / L |
| Reaction Principle: |
a) 2 C6H6 + HCHO ?> C6H5-CH2-C6H5 + H20
b) C6H5-CH2-C6H5 + H2SO4?> p-quinoid compound |
| Cross Sensitivity |
Other aromatics (toluene, xylene) are retained in the pre-layer causing a reddish brown discoloration. If the toluene or xylene concentrations are too high the entire pre-layer up to the indicating layer is discolored making a benzene measurement impossible. Petroleum hydrocarbons, alcohols and esters do not affect the indication. |
Benzene Detection Tubes 15/a (15 - 420 ppm)
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