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elcome to the Official Methods of Analysis of AOAC INTERNATIONAL (OMA), 18th Edition

For 121 years, AOAC has been meeting the needs of analytical scientists for confidence in analytical results through the development and validation of AOAC® Official Methods^SM. Today, AOAC is also meeting the need for fast and easy access to its Official Methods^SM by launching the OMA 18th Edition online.

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	This online OMA will be a “continuous edition.” New and revised methods will be posted as soon as approved and ready. It is also a benefit of membership. AOAC hopes that the online OMA will foster collaboration and development of much needed new methods and the revision of older AOAC® Official Methods^SM. More>> Guide to method format Definition of terms and explanatory notes

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	Terms and Conditions of Use and Important Notices

		AOAC® Official MethodsSM are copyrighted and by accessing information on this site, you are subject to AOAC Terms & Conditions of Use.
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	Association preface

		Electronic publishing arrived just in time to save the Official Methods of Analysis of AOAC INTERNATIONAL from its own success. Each of the two volumes of the previous 17th Edition has grown to an almost unmanageable size.
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	AOAC Methods Validation Program


		AOAC INTERNATIONAL is a unique, nonprofit scientific organization whose primary purpose is to serve the needs of government, industry, and academic laboratories for analytical methods and quality measurement systems.
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