Size Selective Samplers


Size-selective Sampling

Size-selective sampling of industrial aerosols is based on the measurement of particles associated with a specific human health effect. ACGIH recommends that particle size-selective threshold limit values (TLVs) be expressed as follows:

1. Inhalable (100-m 50% cut-point), hazardous when deposited anywhere in the respiratory tract

2. Thoracic (10-m 50% cut-point), hazardous when deposited anywhere in the lung airways and the gas exchange regions

3. Respirable (4-m 50% cut-point), hazardous when deposited in the gas exchange regions of the lungs

PM2.5 and PM10 sampling according to EPA regulations determines compliance with ambient air quality standards, sources of particles, and effects on the environment and public health.





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