Draeger Tube, Chromic Acid 0.1/a (9)tst/box 0.1-0.5 mg/m3
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Product Code: 6728681
Brand: DRAEGER SAFETY INC.
Draeger Tube - Chromic Acid 0.1/a
Order No. 67 28 681
|Standard Measuring Range||0.1 to 0.5 mg/m3 |
Discoloration compared to color standard.
|Number of Strokes n:||40|
|Time for Measurement:||approx. 8 minutes|
|Standard Deviation:||± 50%|
|Color Change:||white to violet|
|Ambient Operating Conditions|
|Temperature:||5 to 40° C ~ 41 to 104° F|
|Absolute Humidity:||< 20 mg H2O / L|
| a) CrO3 + H2SO4 CrVI |
b) CrVI + diphenylcarbazide CrIII + diphenylcarbazone
| Metal chromates such as zinc or strontium chromate are indicated with about half the sensitivity. |
CrIII compounds do not affect the indication.
Very high chromate concentrations lead to a rapid bleaching of the indication. Measurements should be repeated with less strokes
|After carrying out the required 40 pump strokes the reagent ampoule must be broken, the liquid transferred onto the indicating layer and carefully drawn through it using the pump.|
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