Welcome 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. 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. 

New Material

Reflecting AOAC’s work with various analytical communities, the 18th edition features significant new and revised material since the last major printing in 2000. Numerous references and suppliers have been updated throughout, providing access to more current information. Other new material includes:

• A new chapter (Chapter 51) dedicated to dietary supplements that for now contains ephedrine methods;

• A new subchapter on Bacillus anthracis (Chapter 17, subchapter 14) that includes AOAC’s efforts with the U.S. Department of Homeland Security;

• Removal of the “Surplus” designation (methods previously designated as Surplus will be included in their entirety at a later date);

• Updated information of many program components of the Official MethodsSM validation process; and,

• Editorial revisions throughout.