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Draeger Tube, Formaldehyde 0.2/a 0.2-5 ppm, Box of 10

Draeger Tube, Formaldehyde 0.2/a 0.2-5 ppm, Box of 10

$118.00
Availability: May direct ship from manufacturer.
Product Code: 6733081

Draeger Tube - Formaldehyde 0.2/a
Order No. 67 33 081

Application Range
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 minutes / approx. 3 minutes
Standard Deviation: ± 20 to 30%
Color Change: white to pink
Ambient Operating Conditions
Temperature: 10 to 40° C ~ 50 to 104° F
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.
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 4 0.05 to 0.63 ppm
100 5 0.04 to 0.5 ppm


View the entire Draeger Tubes & CMS Handbook

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