Formaldehyde Detection Tubes 0.2/a (0.2 - 5 ppm)
For short-term measurements more than 160 Draeger-Tubes are available to measure the spot concentrations of specific gases. Measurement usually takes between 4 seconds and 15 minutes. The tubes are used either manually with the Draeger-Tube Accuro Pump or automatically with the Draeger X-act 5000.
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
Formaldehyde Detection Tubes 0.2/a (0.2 - 5 ppm)
| 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 |
Formaldehyde Detection Tubes 0.2/a (0.2 - 5 ppm)
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