Mercaptan Detection Tubes 20/a (20 - 100 ppm)
For short-term measurements more than 160 Draeger-Tubes are available to measure the so-called spot concentrations of specific gases. A wide range of different gases and vapours can be detected and measured, e.g.: Determining and measuring concentration peaks, Measuring personal exposure in the inhalation area, Detecting leaks in pipelines, gas installations etc., and Air analysis in sewers, shafts and confined spaces.Contains 10 tubes
|Standard Measuring Range||20 to 100 ppm|
|Number of strokes n:||10|
|Time for Measurement||approx. 2.5 min.|
|Standard Deviation||± 10 to 15 %|
|Color Change||white ──> yellow brown|
|Temperature||0 to 50°C|
|Absolute Humidity||3 to 30 mg H2O / L|
|Reaction Principle||a) 2 R-SH + Cu^2+ ──> Cu (RS)2 + 2H+|
b) Cu (RS)2 + S ──> yellow brown copper
|Cross Sensitivity||Higher molecular weight alkyl mercaptans|
(e.g. propyl - and butyl mercaptans) are
indicated with approx. the same sensitivity.
Hydrogen sulfide is indicated with approx.
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.
|Additional Information||After performing the required ten pump|
strokes the reagent ampoule must be
broken. The liquid of the ampoule must
be transferred to the indicating layer and
carefully drawn through it using the pump.
After completing the measurement wait
for 3 min. prior to evaluation.