ESM Andersen Instruments - Solutions for Particulate Measurements

ESM Inlets for Health Related Sampling

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The fraction of airborne particles which is inhaled into a human body depends on the properties of particles and the particle size. Inhaled particles can be deposited somewhere in the lung. They can cause damages close to the deposition site if they are corrosive, carcinogenic, very small or capable of initiating some other type of damage.

The international guideline ISO 7708 describes the particle size fraction definitions for health-related sampling:  Inhalable fraction: The mass fraction of total airborne particles which is inhaled through nose and mouth (TSP = total suspended particles).   Thoracic fraction: The mass fraction of inhaled particles penetrating beyond the larynx. The particle size median value is smaller or equal 10 µm (PM-10).   Respirable fraction: The mass fraction of inhaled particles which penetrates to the unciliated airways deep in the lung.   The "high risk" respirable convention is used if it is desired to protect children or sick persons. The particle median diameter is 2,5 µm.  The "healthy adult" respirable convention is used if it desired to protect healthy adults. The particle median diameter is 4,25 µm.  These by convention defined particulate size fractions can be measured all with one of the ESM Eberline sampling heads.    ESM TSP-Head for inhalable fraction  ESM PM10-Head for thoracic fraction  ESM PM2.5-Head for respirable high risk fraction  ESM Cyclon for respirable healthy adult fraction

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