Item #: 6724001
MFG: Draeger

Nitrous Gases Detection Tubes 20/a (20 - 500 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 Range20 to 500 ppm
Number of strokes n:2
Time for Measurementapprox. 30 sec.
Standard Deviation± 10 to 15 %
Color Changepale gray ──>  red brown
Temperature15 to 40°C
Absolute Humiditymax. 40 mg H2O / L
Reaction Principlea) NO + Cr^VI   ──> NO2
b) NO2 + o-Dianisidine ──> red
    brown reaction product
Cross SensitivityThere is no influence of chlorine and
ozone, if these gases are in range of
their TLVs. Higher concentrations are
indicated with different sensitivities.