Workplace atmospheres ― Characterization of ultrafine aerosols/ nanoaerosols ― Determination of the size distribution and number concentration using differential electrical mobility analysis systems

This standard provides guidance for measuring the number concentration and size distribution of ultrafine and nanoaerosols using a mobile particle counter (also known as a differential mobility analyzer). Only the particle size fraction of the aerosol is considered. For ultrafine and nanoaerosols, exposure metrics such as number concentration and surface area concentration are important. This standard also provides guidance for measuring occupational exposure to ultrafine and nanoaerosols.