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Reducing volatile organic compounds (VOCs) concentrations in built environments is necessary to achieve acceptable indoor air quality or comply with workplace regulations. Different air cleaning technologies are applied for the removal of VOCs. Unlike conventional adsorption-based technologies like activated carbons, so-called electronic air cleaning (EAC) technologies generate reactive species directly or indirectly to oxidize VOCs. In this study, dynamic single pass tests were conducted in a test rig consisting of four identical test ducts with individual flow control, allowing simultaneous evaluation of four different air purification systems under identical conditions. Three oxidation-based air-cleaning technologies were considered: photocatalytic oxidation (PCO), non-thermal plasma (NTP), and ozonation (O₃). A total of 17 different configurations of EAC systems were tested for acetone and/or methyl ethyl ketone …