Draeger Tube, Benzene 15/A 15-420ppm, Box of 10
DRAEGER SAFETY INC.
/ Model #8101741
Details
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. | |
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