Dräger Short Term Detection Tubes - Benzene 15/a (Pack of 10)8101741
Dräger Tubes For Short Term Measurements: Benzene 15/a
Dräger Safety offer a massive range of short-term gas detection tubes for the measurement of various gases. This particular set of tubes is for (Benzene 15/a).
The tubes come in a pack of 10tubes and have a shelf life of 2 years.
|Standard Measuring Range:||15 to 420 ppm|
|Number of Strokes n:||20 to 2|
|Time for Measurement:||max. 4 min|
|Standard Deviation:||± 30 %|
|Colour Change:||white to red brown|
Ambient Operating Conditions:
|Temperature:||0 to 30 °C|
|Absolute Humidity||max. 30 mg H2O / L|
a) 2 C6H6 + HCHO ~> C6H5-CH2-C6H5 + H2O b) C6H5-CH2-C6H5 + H2SO4 ~> p-quinoid compound
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..
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