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Whats the difference between a photometer like the TSI DUSTTRAK™ aerosol monitor and a particle counter like the P-TRAK® ultrafine particle counter?

April 26, 2017aerosol counter difference monitor p-trak® particle photometer TSI ultrafine

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Whats the difference between a photometer like the TSI DUSTTRAK™ aerosol monitor and a particle counter like the P-TRAK® ultrafine particle counter?

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Particle counters can “see” single particles and output data in units of particles/cm3. Photometers “see” the mass of many particles simultaneously occupying a volume of space and output data in units of mg/m3.