Aero Laser CH2O Continuous Formaldehyde Monitor (Model AL4021)

Aero Laser CH2O Continuous Formaldehyde Monitor (Model AL4021)

A highly sensitive chemical analyser for continuous monitoring of formaldehyde

  • Continuous online monitoring of formaldehyde emissions with unique sensitivity of 100ppt
  • Analysis of gaseous and liquid samples with only one instrument
  • Designed for climate research, environmental air monitoring and indoor air quality control
  • Ideal for emission control of wood, plastic, and fabric based products
  • Can be employed together with up to 16 emission test chambers

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 information

Enquire about this product

Please enable JavaScript in your browser to complete this form.