Formaldehyde 2/a (2 - 40 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 vapors 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 2/a (2 - 40 ppm)
| Standard Measuring Range: |
2 to 40 ppm |
| Number of Strokes (n): |
5 |
| Time for Measurement: |
approx. 30 sec |
| Standard Deviation: |
±20 to 30 % |
| Color Change: |
white ?> pink |
| Temperature: |
0 to 40° C |
| Absolute Humidity: |
3 to 15 mg H2O / 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. |
| Additional Information |
The reagent ampoule must be broken down before carrying out the measurement. |
Formaldehyde 2/a (2 - 40 ppm)
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