VDI-Society for Chemical & Process Engineering - Germany The Filtration Society - Great Britain GÖCH - Austrian Chemical Society - Austria FSJA - The Filtration Society - Japan Association - Japan The Society of Chemical Engineers - Japan SFF - Societé Francaise de Filtration - France CIWEM The Chartered Institution of Water and Environmental Management - Great Britain DGMT - German Membrane Society - Germany MKE - Hungarian Chemical Society - Hungary PACE - Polish Association of Chemical Engineers - Stowarzyszenia Inzynierów i Techników Przemyslu Chemicznego - Poland CSCHI - Czech Society of Chemical Engineering - Czech Republic Iberian Chapter of the Filtration Society - Spain Nordic Chapter of the Filtration Society - Finland, Danmark, Sweden, Norway Filtrieren & Separieren - Germany Filtration+Separation - Great Britain CIT plus - Germany CIT Chemie Ingenieur Technik - Germany Filtration - Great Britain