Official methods of analysis of AOAC International, 18th Ed. Revision 4, April 2011

The 18th Edition, Revision 4 includes new and updated material since the last printing in 2010: First Action methods (new methods adopted, with collaborative study references to the Journal of AOAC INTERNATIONAL). Final Action methods. Modifications. Minor editorial corrections. Repealed methods (methods determined no longer relevant). Biological Threat Agent Methods (BTAM) Validation Guideline, a comprehensive technical guide for conducting AOAC validation studies for biological threat agent methods and/or procedures submitted for Performance Tested MethodsSM (PTM) and OMA status, includes testing plans for internal, independent, and collaborative studies.