scope:

This standard describes methods for generating test aerosols based on the dispersion of solid materials.

The characteristics of the test aerosol in particular with regard to the concentration of the solid particles and their size distribution must be known. A typical example of this is the test of the performance of particulate filters, especially their loading behaviour.

The methods can be used for calibrating, adjusting or checking particle-counting measuring instruments and for checking the associated sampling, conditioning and diluting systems.

In addition, these test aerosols can be used for determining the separation or permeation performance of precipitation or separation systems (e.g. filters and cyclones).

Further possible applications exist in the provision of tracer particles for optical flow rate measurement and of test materials and standardised samples for more detailed analysis (e.g. EC/OC analysis).

These methods are employed as well in medical research (e.g. inhalation experiments, toxicological investigations).