Draeger Tube, Formaldehyde 2/A 2-40ppm

Availability: Call for Availability
Product Code: 8101751


Draeger Tube - Formaldehyde 2/a
Order No. 81 01 751

Application Range
Standard Measuring Range 2 to 40 ppm
Number of Strokes n: 5
Time for Measurement: approx. 30 seconds
Standard Deviation: ± 20 to 30%
Color Change: white to pink
Ambient Operating Conditions
Temperature: 0 to 40° C ~ 32 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.
Additional Information
The reagent ampoule must be broken before carrying out the measurement.