The principle of the method is that air is drawn by a pump through a size selective inlet (Harvard impactor) and next a filter on which airborne particles are collected quantitatively. The
impactors are designed to sample particles of 2.5 μm (10 μm) with an efficiency of 50% at a
flow rate of 10 l/min (larger particles less efficiently, smaller particles more efficiently).
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No related previous identifiers.