Dräger Tube -Mercaptan
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Dräger Tubes For Short Term Measurements: Mercaptan 20/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 (Mercaptan 20/a).
The tubes come in a pack of 10 tubes and have a shelf life of 2 years.
Application Range:
| Standard Measuring Range: | 20 to 100 ppm |
| Number of Strokes n: | 10 |
| Time for Measurement: | approx. 2.5 min |
| Standard Deviation: | ± 10 to 15 % |
| Colour Change: | white to yellow brown |
Ambient Operating Conditions:
| Temperature: | 0 to 50 °C |
| Absolute Humidity | 3 to 30 mg H2O / L |
Reaction Principle:
a) 2 R-SH + Cu2+ ~> Cu(RS)2 + 2 H+ b) Cu(RS)2 + S ~> yellow brown copper compound
Cross Sensitivity:
Higher molecular weight alkyl mercaptans (e.g. propyl- and butylmercaptans) are indicated with approximately the same sensitivity. Hydrogen sulfide is indicated with approximately twice the sensitivity of the mercaptans (e.g. 10 ppm hydrogen sulfide gives an indication of 20 ppm). In presence of Hydrogen Sulfide a measurement of mercaptans is impossible..
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