Formaldehyde Detection Tubes 0.2/a (0.2 - 5 ppm)

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Item #: 6733081
MFG: Draeger

UOM: Box of 10

$102.00
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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.
Standard Deviation: ±20 to 30 %
Color Change: white ─> pink
Temperature: 10 to 40° C
Absolute Humidity: 3 to 15 mg / L
Reaction Principle: HCHO + C6H4(CH3)2 + H2SO4 ──>
quinoid reaction products
Cross Sensitivity: 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:
Pump Strokes Scale Divided By Range
40 2 0.1 to 1.25 ppm
80 40 0.05 to 0.63 ppm
100 5 0.04 to 0.5 ppm