Links:

• Association of Southern Feed, Fertilizer and Pesticide Control Officials (ASFFPCO) (http://www.asffpco.org)
• Association of American Plant Food Control Officials (AAPFCO) (http://www.aapfco.org)
• The Fertilizer Institute ( http://www.tfi.org/memlink.htm)
• Florida Institute of Phosphate Research (http://www.fipr.state.fl.us)
• Florida Phosphate Council (http://www.flaphos.org )
• International Fertilizer Industry Association (http://www.fertilizer.org)
• The International Fertiliser Society ( http://www.fertiliser-society.org) "...an international forum for the discussion and dissemination of knowledge of scientific, technical, environmental, economic and safety aspects of the production, marketing, use and application of fertilisers..."
• Standard Reference Materials at National Institute of Standards and Technology(NIST) (Go to SRM 194)
• AOAC International (http://www.aoac.org)

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