Dräger Tube -Hydrocyanic Acid 0.5/a

DrägerSKU: 8103601

Sale price£75.00


Dräger Tubes For Short Term Measurements: Hydrocyanic Acid 0,5a

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 (Hydrocyanic Acid 0,5a).

The tubes come in a pack of 10 tubes and have a shelf life of 2 years.

Application Range:

Standard Measuring Range: 0.5 to 5 ppm / 5 to 50 ppm
Number of Strokes n: 10
Time for Measurement: approx. 2.5 min. / ca. 0.5 min.
Standard Deviation: ± 10 to 15 %
Colour Change: yellow to red

Ambient Operating Conditions:

Temperature: 0 to 40 °C
Absolute Humidity < 40 mg H2O / L

Reaction Principle:

a) HCN + HgCl2 ~> HCl b) HCl + methyl red ~> red reaction product

Cross Sensitivity:

30 ppm hydrogen sulfide, 300 ppm ammonia, 40 ppm sulfur dioxide, 20 ppm nitrogen dioxide and 1,000 ppm hydrogen chloride do not affect the indication. Hydrogen sulfide causes the pre-layer to discolor to dark brown. Ammonia concentrations above 300 ppm can cause the indication at the beginning of the indicating layer to discolor back to yellow. Acylonitrile up to a concentration of 1,000 ppm does not affect the indication. It is impossible to measure hydrocyanic acid in the presence of phosphine..

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