Draeger Tube, Benzene 15/A 15-420ppm

$103.00
Availability: Call for Availability
Product Code: 8101741
Brand: DRAEGER SAFETY INC.
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Draeger Tube - Benzene 15/a
Order No. 81 01 741   

Application Range
Standard Measuring Range 15 to 420 ppm
Number of Strokes n: 20 to 2
Time for Measurement: max. 4 min
Standard Deviation: ± 30%
Color Change: white to red brown
   
Ambient Operating Conditions
Temperature: 0 to 30° C ~ 32 to 86° F
Absolute Humidity: max. 30 mg H2O / L
   
Reaction Principle
a) 2 C6H6 + HCHO C6H5-CH2-C6H5 + H2O
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.