Skip to content

This website uses cookies. View our cookies policy.

Cambustion AAC front view showing touchscreen, transparent top showing classifier

AAC | Aerodynamic Aerosol Classifier

The Aerodynamic Aerosol Classifier

Launched in 2016, the Aerodynamic Aerosol Classifier is a unique aerosol instrument, capable of classifying particles between 25 nm and > 5,000 nm (PM5) according to their aerodynamic diameter.

As the AAC classification principle is independent of particle charge, no charger or neutralizer is required for operation. Moreover, the output is not affected by multiple charging issues or by low charging efficiencies, ensuring that only a single aerodynamic peak is present, and that particle transmission remains high across the entirety of the wide size range.

Whilst in the past impactors allowed selection of small particles, and virtual impactors the selection of large particles, only the Cambustion AAC allows the selection of particles in a finite range by aerodynamic particle size.

The working principle is explained in this animation.

¾ view of the Cambustion AAC
Rear view of the Cambustion AAC


Production of a truly monodisperse aerosol:

In combination with other equipment:

As a low-pass separator / variable impactor:

A reversible user modification now allows the AAC to be used as a “variable impactor”, such that the particles smaller than the setpoint (which would normally be lost in the sheath flow and internal filters) may be intercepted and used for further experiment.

Screenshot of AAC UI showing a completed scan

Need more information? Connect to an expert

Key Application Notes

TitleData TypeDownload FileSizeLast Updated
TitleUsing the Aerodynamic Aerosol Classifier (AAC) as a low-pass separatorData TypeApplication noteDownload Fileaac04v01-using-the-aac-as-a-low-pass-separator.pdfSize911.90 KBLast Updated
TitleMeasuring size-resolved particle penetration through face mask materialsData TypeApplication noteDownload Fileaac03v03-size-resolved-particle-penetration-face-masks.pdfSize708.53 KBLast Updated

AF10 Aerosol Flowmeter

The AAC is compatible with the new AF10 standalone aerosol flowmeter, offering real-time measurement of the aerosol flow (via orifice delta P) which can be used to maintain constant resolution on the AAC and monitor performance of other connected equipment.

Find out more

Explore Related Products