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Accreditations / Proficiency Testing


Approved Chemist 2006-2019
by the Examination Board of the American Oil Chemist Society (AOCS):


Proficiency Testing Program Participant:

   - Association of Official Analytical Chemist - 2014 -present (AOAC)
       an A2LA accredited Proficiency Testing Provider in accordance with the
       International standard 17043:2010.
   - American Oil Chemist Society (AOCS)
      Nutritional Labeling, Gas Chromatography, Oilseed Meal, Specialty Oils,

   - Association of American Feed Control Officials (AAFCO)
   - Association of American Plant Food Control Officials (AAPFCO)
       Magruder Fertilizer Check Sample Program (Magruder)

Contact Us

Email:(Please include a phone number when emailing questions)

Dr. Thomas P. Mawhinney, Missouri State Chemist

Complete mailing address:

Dr. Thomas P. Mawhinney
University of Missouri - Columbia
Office of the Missouri State Chemist
Analytical Services
Rm 4 Agriculture Bldg.
700 Hitt Street
Columbia, MO 65211

Phone: 573-882-2608
Fax: 573-884-4631