Benzene Detection Tubes 0.25/a (0.25 - 10 ppm)
For short-term measurements more than 160 Draeger-Tubes are available to measure the so-called spot concentrations of specific gases.
A wide range of different gases and vapors 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
| Standard Measuring Range |
0.25 to 10 ppm |
| Number of Strokes (n) |
10 to 2 |
| Time for Measurement |
max 15 min. |
| Standard Deviation |
±30 % |
| Colour Change |
white ─> pale brown |
| Temperature |
10 to 40° C |
| Absolute Humidity |
3 to 15 mg H2O / L |
| Reaction Principle |
2 C6H6 + HCHO ─> C6H5-CH2-C6H5 + H20
C6H5-CH2-C6H5 _ H2SO4─> p-chinoid compound |
| Cross Sensitivity |
Other aromatics (toluene, xylene, ethyl benzene) are indicated as well. It is impossible to measure benzene in the presence of these aromatics. Petroleum hydrocarbons, alcohols and esters do not affect the indication. |
| Additional Information |
Before performing the measurement the ampoule must be broken and the liquid
transferred onto the indicating layer so that it is completely saturated. |