Ian leads Ricardo Energy & Environment’s Aerosol Science and Oil Dispersants laboratory. He has over two decades of experience in aerosol science, involving the behaviour and measurement of gas-borne particles and droplets. He specialises in instrument calibration, standard development, instrument evaluation/validation, automotive emissions, indoor and ambient air quality assessment, stack sampler validation, in-situ filter testing, best practicable means (BPM) assessment of gaseous discharges and ventilation plant design/assessments. Ian is an expert on the European Committee for Standardization (CEN) Working Group (CEN/TC264/WG32) for particle number concentration determination, the International Organization for Standardization (ISO) Working Groups for particle sizing by light interaction (ISO/TC24/SC4/WG9) and electrical mobility (ISO/TC24/SC4/WG12). He sits on the British Standards Institution (BSI) Committees LBI/37/4 ‘Sizing by Methods Other than Sieving’ and EH/2/3 ‘Air quality, Ambient Atmospheres’. As the lead for our oil dispersant laboratory, Ian oversees the commercial dispersibility tests that Ricardo Energy & Environment provides to a global marketplace including the development and maintenance of the testing standard WSL LR448 – an industry recognised method for testing the efficacy of oil spill dispersants.