Item #: 8101781
MFG: Draeger

Water Vapor Detection Tubes 1/b (1 - 40 mg/l)

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 Range20 to 40  mg/L   /   1 to 15 mg/L
Number of Strokes (n)1 / 2
Time for Measurementapprox. 20 sec. / approx. 40 sec.
Standard Deviation ±15 to 20 %
Colour Changeyellow ──> turquoise-blue
Temperature0 to 50° C
Absolute Humidityup to 100% r.h.
Condensation in the tube measurement errors.
If high r.h. (in excess of 80%) is to be expected,
the temperature of the tube should be at least
5°C higher than ambient temperature. Given a
r.h. below 80%, the temperature of the tube
should be at least equal to the ambien temperature
Reaction HumidityH2O + Mg(ClO4)2 ──> turquoise-blue reaction product
Cross SensitivityAcid gases are liable to cause plus errors. Basic
gases are liable to cause minus errors.