The Concentric E.S.P. collects aerosol particles on a foil located inside of an aluminum column.  The electrode is centrally located, in the air flow pattern, and with a high voltage corona discharged particles are deposited on the foil.  The concentric E.S.P. can be used to collect samples for further analysis or as a cleanup device to extend the life of exhaust filters in an aerosol system.  The Concentric E.S.P. can be operated at flow rates up to 125L/min. thus allowing it to be used to sample large air volumes.   Although sample collection efficiency may vary in different situations, suggested operating current is 25-30 micro amps.  Average collection efficiency for dry particles should exceed 80%.         

Stock # 02-900  Concentric E.S.P.