How it works
The Aero-Laser formaldehyde monitor AL4021 is an extremely sensitive chemical analyser, based on the Hantzsch (acetyl- acetone) reaction.
It features the detection of formaldehyde down to lowest concentrations of 100 ppt (parts per trillion) for gaseous samples, and 150 ng/litre (eq. 2×10 molar) for liquid samples, respectively. The -9 complete chemical processing, including gas stripping, is integrated into the instrument. Using a fluorimetric detection method, the instrument achieves an extraordinary selectivity, avoiding interferences of other chemical substances in the sample gas or liquid.
The AL4021 can be calibrated semi-automatically by using liquid formaldehyde standards or automatically, using an optional integrated standard gas generator, based on a permeation tube. Contrary to other highly sensitive formaldehyde monitoring methods, the instrument has a delay time of only a few minutes and a time resolution of 90 seconds.
Originally designed for environmental and climate research, the AL4021 became a major instrument in the field of formaldehyde emission monitoring of products based on wood, plastics or fibres, within the last few years.
Servicing
Data sheets and specifications are subject to change, and Enviro Technology cannot be held responsible for inaccuracies in manufacturer-issued data sheets. To confirm specifications and obtain the latest issue of the data sheet, please contact us.
