Description
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..
For more information on Dräger-Tubes click the image below.
To view our range of Dräger pumps please click below.
