Dräger Tube -Chromic Acid 0.1/a

DrägerSKU: 6728681

Sale price£110.31


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

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 min
Standard Deviation: ± 50 %
Colour Change: white to violet

Ambient Operating Conditions:

Temperature: 5 to 40 °C
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..

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