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Accreditations / Proficiency Testing


Approved AOCS Chemist 2005-2024
by the Examination Board of the American Oil Chemist Society (AOCS)

**Awarded First Place 2020 & 2023: Nutritional Labeling**

* The ESCL is a quarterly USDA Compliance Inspected Laboratory.


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, (IF01 Nutrients in Infant Formula and
       Adult Nutritionals, and, C01 Meat Chemistry).
   - American Oil Chemist Society (AOCS) - Approved Chemist since 2005.
      Nutritional Labeling, Gas Chromatography, Oilseed Meal, Specialty Oils,
      Cholesterol, Soybean.

   - Association of American Feed Control Officials (AAFCO)
      AAFCO Proficiency Testing Program has been assessed by ANAB and meets
      the requirements of international standard ISO/IEC 17043:2010.

   - 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:

AOCS Approved Chemist

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

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