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Draeger Tube,Chromic Acid,Bx 9 0.1/a (9)tst/box 0.1-0.5 mg/m3

Draeger Tube,Chromic Acid,Bx 9 0.1/a (9)tst/box 0.1-0.5 mg/m3

Availability: May direct ship from manufacturer.
Product Code: 6728681

Draeger Tube - Chromic Acid 0.1/a
Order No. 67 28 681

Application Range
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
Reaction Principle
a) CrO3 + H2SO4  CrVI
b) CrVI + diphenylcarbazide  CrIII + diphenylcarbazone
Cross Sensitivity
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
Additional Information
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.

View the entire Draeger Tubes & CMS Handbook