organised by the Scottish Section of the Society for Analytical Chemistry. The Scottish Section of the Society for Analytical Chemistry. organized by the London Section of the Society of Chemical Industry. organized by the Midlands Section and the Microchemistry Group of the Society for Analytical Chemistry. organised by the Electronics Division of the Institute of Electrical Engineers. organised by the Electronics Division of the Institution of Electrical Engineers. organised by the Power Division of the Institution of Electrical Engineers. organised by the Institution of Electrical Engineers. organised by the Electronics Division of the Institution of Electrical Engineers, etc. organise par the Swedish Institute for Surface Chemistry.