Official Methods of Analysis of AOAC INTERNATIONAL, 19th Edition (2012)

Since 1884, AOAC INTERNATIONAL has been meeting the needs of its members and scientists throughout the world for confidence in analytical results by delivering AOAC® Official MethodsSM. The Official Methods of Analysis of AOAC INTERNATIONAL (OMA) is an international source of methods and voluntary consensus standards, with many countries and international organizations contributing their expertise. OMA is the most comprehensive and reliable collection of chemical and microbiological methods available in the world and are contained in many of the Codex food standards.

Three Formats to Choose From

AOAC offers the Official Methods of AnalysisSM of AOAC INTERNATIONAL (OMA) in three formats:
  • Print - The print edition is a 2-volume set, hard cover bound books (not a subscription). Following are highlights in the new edition:
    • 31 Methods adopted as First Action
    • 16 Standard Method Performance Requirements (SMPRSM) developed and approved by AOAC stakeholder panels
    • 7 Methods with major modifications
    • 10 Methods with minor editorial revisions
    • 7 New appendices on guidelines for SMPRSM, voluntary consensus standards, probability of detection, validation of microbiological methods for foods and environmental surfaces, validation of dietary supplements and botanicals, single-laboratory validation of infant formula and adult nutritionals, and validation of food allergens
    • A new subchapter on General Screening Methods (Chapter 17, subchapter 15) that includes screening methods for bacteria
    • Updated information on program components of the Official MethodsSM process (found in the front matter)
  • Online subscription - (OMA) online, which is an annual subscription and is a "continuous edition." New and revised methods are posted as soon as approved and ready which gives you the most up-to-date methods. AOAC offers several levels of online licenses to fit your needs as an individual or an organization, of any size. 
  • Single Method in PDF format may be purchased through AOAC Customer Service using the order form.

OMA Flyer

Click on the image to view the OMA flyer.


  • OMA online now offers Standard Method Performance Requirements (SMPRSM).
  • OMA online provides you with the most up-to-date methods available.
  • Access to the most comprehensive and reliable collection of chemical and microbiology methods for foods supplements and drugs.
  • Three formats to fit your needs as an individual or organization, of any size.
  • Access to technical support from AOAC’s OMA Editor.