Particle Counter Flow Rate: 100 LPM vs. 1 CFM
Many current standards define airborne particle monitoring in units of particles per cubic meter. Often, these standards require sampling an entire cubic meter to provide an accurate measurement of airborne particulate levels. Using a conventional aerosol particle counter that samples 1 cubic foot per minute (1 CFM) requires more than 35 minutes to sample 1 cubic meter. Newer particle counters are now available with 100 liter per minute (100 LPM) sampling rates. This application note discusses the benefits of sampling at higher flow rates.
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