Item #: 6728651
MFG: Draeger

Pyridine Detection Tubes 5/A (5 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 Range5 ppm
Number of strokes n:20
additional 5 strokes have to be taken in clean
air after reopening the second reagent ampoule
Time for Measurementapprox. 20 min.
Standard Deviation± 30 %
Color Changewhite ──> brown red
Temperature10 to 30 °C
Absolute Humidity3 to 15 mg H2O / L
Reaction PrinciplePyridine + Aconitic acid + Acetic anhydride
──> brown red reaction product
Cross SensitivityAmmonia in the TLV range does not interfere
Additional InformationBefore carrying out the measurement the
lower reagent ampoule must be broken and
the liquid transferred to the indication layer
so that it is saturated. After performing 20
pump strokes, the upper reagent ampoule
must be broken. The granular contents must
be shaken out of the broken ampoule by 
gently tapping the side of the tube. The tube
must be held vertically with the inlet of the
tube up during the 5 additional pump strokes.