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A comment on The hidden cost of air quality monitoring. Parent comment
All low cost sensors are using the laser scattering technique and thus do approximate the mass and not a direct measurement.
However tests show that PM2.5 is the most accurate and often PM10 in these sensors is not very good.
All low cost sensors are using the laser scattering technique and thus do approximate the mass and not a direct measurement.
However tests show that PM2.5 is the most accurate and often PM10 in these sensors is not very good.