Dräger Tubes For Short Term Measurements: Organic Arsenic Compounds and Arsine
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 (Organic Arsenic Compounds and Arsine).
The tubes come in a pack of 10 tubes and have a shelf life of 2 years.
|Standard Measuring Range:||Qualitative 0.1 ppm Arsine and 3 mg org. arsenic/m3 are the minimum detectable concentrations.|
|Number of Strokes n:||8|
|Time for Measurement:||max. 3 min|
|Standard Deviation:||± 50 %|
|Colour Change:||yellow to grey|
Ambient Operating Conditions:
|Temperature:||0 to 40 °C|
|Absolute Humidity||< 50 mg H2O / L|
a) AsR3 + Zn/HCl ~> AsH3 b) AsH3 + Au/Hg-complex ~> Au (colloidal)
Phosphine and arsine are indicated before the ampoule is broken, but with different sensitivities.
Arsine is present if a grey ring appears in the indicating layer after performing 8 pump strokes. If there is no indication, the ampoule must be broken and the liquid transferred onto the indicating layer such that it is completely saturated. Then an additional eight pump strokes must be performed..
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