Formaldehyde Detection Tubes 0.2/a (0.2 - 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, such as:
- Determining and measuring concentration peaks
- Measuring personal exposure in the inhalation area
- Detecting leaks in pipelines, gas installations etc.
- Air analysis in sewers, shafts and confined spaces
|Standard Measuring Range:
||0.5 to 5 / 0.2 to 2.5 ppm
|Number of Strokes (n):
||10 / 20
|Time for Measurement:
||approx. 1.5 min. / approx. 3 min.
||±20 to 30 %
||white ─> pink
||10 to 40° C
||3 to 15 mg / L
||HCHO + C6H4(CH3)2 + H2SO4 ──>
quinoid reaction products
||Styrene, vinyl acetate, acetaldehyde, acrolein, diesel fuel and furfuryl alcohol are indicated with a yellowish brown discoloration. 500 ppm octane, 5 ppm nitric oxide and 5 ppm nitrogen dioxide have no effect.
|Extension of the Measuring Range:
||The measuring range can be extended in conjunction with the activation tube (Order No. 81 01 141). The following information applies to the n = 20 stroke scale:
||Scale Divided By
||0.1 to 1.25 ppm
||0.05 to 0.63 ppm
||0.04 to 0.5 ppm