The particle counter measures the air quality downstream of your filters. Several measurements are taken to validate the amount of particles passing through the final stage of air filters. We can also calculate filtration efficiency. To do this we first measure the particles upstream of your air filters in your ambient air. We then compare this to the particles downstream of your filters. The result of this measurement confirms whether your filtration system is correct or if a different solution in required to handle your local site conditions.
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USA
