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 vapours can be detected and measured, e.g.: Determining and measuring concentration peaks, Measuring personal exposure in the inhalation area, Detecting leaks in pipelines, gas installations etc., and Air analysis in sewers, shafts and confined spaces.
Contains 10 tubes
|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.