The first World Filtration Congress (WFC), held in 1974, was informally coordinated by a number of individual organizations, each acting independently.  Subsequent congresses are held every 3 to 4 years and rotate among different member countries on a competitive basis.  In 1990, International Delegates on Filtration (INDEFI) was formally established as an organization to coordinate and formalize organizing future WFCs.  Host countries of the World Filtration Congress must be an INDEFI member country.  The member countries of INDEFI are:

Australia Hungary South Korea
Austria India Sweden
Chinese Taipei  Japan   United Kingdom
France Noridcs United States

Past World Filtration Congresses

Year WFC City Country Organization
2016 WFC 12 Taipei Chinese Taipei Chinese Taipei Chemical Engineering Organizations and Institutions
2012 WFC 11 Graz Austria GOCH - Austrian Chemical Society
2008 WFC 10 Leipzig Germany VDI - Society for Chemical & Process Engineering
2004 WFC 9 New Orleans USA AFS - American Filtration & Separations Society
 2000  WFC 8  Brighton  Great Britain  Filtration Society
 1996  WFC 7  Budapest  Hungary  Hungarian Filtration Association
1993   WFC 6  Nagoya  Japan  Japanese Filtration Association
 1990  WFC 5  Nice  France  SFF - Societe Francaise de Filtration
 1986  WFC 4  Ostende  Belgium  KVIV
 1982  WFC 3  Wilmington  USA  AFS - American Filtration & Separations Society
 1978  WFC 2  London  Great Britain  Filtration Society
 1974  WFC 1  Paris  France  SFF - Societe Francaise de Filtration

Proposals to host a future WFC Congress are accepted only from registered INDEFI members and the applying organization must provide evidence that the organizing team has the experience and resources to stage a major world conference and having continuous activities related to filtration and separation (including gas-solid, liquid-solid, and membrane separation/filtration).

Membership of INDEFI is open to Filtration Societies that have the science and technology of filtration and separation as their principal activity.  Only one member is being recognized per country.  At present, there are 13 Member Filtration Societies.  Presently, INDEFI membership includes Austria, Australia, China, Chinese Taipei, France, Germany, Hungary, India, Japan, Korea, Nordic Filtration Chapter, UK and USA.  Societies who are interested in applying for membership to INDEFI should indicate their principal activities in filtration and separation as well as their membership country and contact Prof. Wallace Leung, Chairman of INDEFI, 2016 - 2021 at 
[email protected].  The 13th World Filtration Congress, originally scheduled for April 20 - 24, 2020, has been rescheduled to September 20 - 24, 2021, at the Hilton Bayfront in San Diego, CA.