{"ob_id":27391,"uuid":"27bf65dd6bc0456a9c43b8caf422e5a7","title":"Harvard Impactor","abstract":"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 \r\nimpactors are  designed to sample particles of 2.5 μm (10 μm) with an efficiency of 50% at a \r\nflow  rate  of 10  l/min (larger  particles less efficiently, smaller  particles more  efficiently).","keywords":"","identifier_set":[],"instrumentType":"other_instrument_type","subInstrument":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/114495/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/168439/?format=json"]}