Dräger Tube -Chromic Acid 0.1/a6728681
Dräger Tubes For Short Term Measurements: Chromic Acid 0.1/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 (Chromic Acid 0.1/a).
The tubes come in a pack of 9 tubes and have a shelf life of 2 years.
|Part no||Dräger Tube||Substance||Measurement Range|
|6728681||Chromic Acid 0.1/a||Chromic Acid||0.1 to 0.5 mg/m3|
|Sodium Chromate||0.1 to 0.5 mg/m3|
|Sodium Chromate||0.2 to 1 mg/m3|
|Zinc Chromate||0.2 to 1 mg/m3|
|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 min|
|Standard Deviation:||± 50 %|
|Colour Change:||white to violet|
Ambient Operating Conditions:
|Temperature:||5 to 40 °C|
|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..
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