Registry of Subject Matter Experts

The Manufactured Food Regulatory Program Alliance (MFRPA) has developed a registry of subject matter experts (SMEs). You are encouraged to register your expertise to help with community-building, information exchange, and building a national integrated food/feed safety system. With your contribution, this database will continue to grow and integrate food and feed experts around the country.  Expertise registration in the following categories is especially important to ensure a viable registry:  Animal Feed Testing, Dairy, Food Laboratory, Food Law and Regulation, Food Processing Technology, Laboratory Accreditation, Pet Food Testing, Sampling, and Seafood.  Sign-up at:

Laboratory Sampling Resources

Strengthening Data Defensibility in Government Human and Animal Food Testing Laboratories Through Accreditation: Lessons Learned From the FDA Accreditation Support Program

GOODSamples or Guidance on Obtaining Defensible Samples

GOOD Test Portions or Guidance on Obtaining Defensible Test Portions

Gy. P. Sampling and Analytical Processes (1988)

Pitard, FF.  Pierre Gy's Sampling Theory and Sampling Practice, Second Edition: Heterogeneity, Sampling Correctness, and Statistical Process Control (1993)  CRC Press, Boca Raton, FL.

Listing of Comminution Equipment

Analytical Results Can Only be as Good as the Test Portion!

Taking and Testing GOODSamples: A Systematic Approach for Representative Sampling from Field to Test Portion. Journal of Regulatory Science, vol. 4, no. 2 (2016). Nancy J Thiex and Charles A Ramsey.

JAOAC Special Section on Sampling
A collection of 13 open access papers (introduction plus 12 manuscripts) published in 2015 serve as an initial effort to create a platform to present critical issues related to sampling of human and animal food products. A listing of the individual papers with DOI for each is linked.

Journal of Agriculture and Food Chemistry.  Lehotay SJ, Cook JM.  Sampling and sample processing in pesticide residue analysis.  2015 May 13;63(18):4395-404.  

Theory and Practice of Sampling for Pesticide Residue Analysis, Jo Marie Cook, Arpad Ambrus, Food Safety Assessment of Pesticide Residues, pp327-403, World Scientific, 2017

TOS Forum
TOS Forum is a free publication for the sampling community, providing a communications platform for all interested in the theory and practice of representative sampling and blending. Papers of particular interest are listed in the attached file.

Information on State Sampling Pilots

1.      Florida Department of Agriculture and Consumer Services Sampling Pilot

2.      Minnesota Department of Agriculture Sampling Pilot

3.      Oregon Department of Agriculture Sampling Pilot

4.      Michigan Department of Agriculture and Rural Development Sampling Pilot

Allen, T., & A. A. Kahn. (1970). Critical evaluation of powder sampling procedures. Chem. Eng. 238, 108–112.

Fussell, R. J., Hetmanski, M. T., MacArthur, R., Findlay, D., Smith, F., Ambrus, A., & Brodesser, P. J. (2007a). Measurement Uncertainty Associated with Sample Processing of Oranges and Tomatoes for Pesticide Residue Analysis. J. Agric. Food Chem. 55, 1062–1070.

Fussell, R. J., Addie, K. J., Reynolds, S. L., & Wilson, M. F. (2002). Assessment of the Stability of Pesticides During Cryogenic Sample Processing. 1. Apples. J. Agric. Food Chem. 50, 441–448.

Fussell, R. J., Hetmanski, M. T., Colyer, A., Caldow, M., Smith, F., & Findlay, D. (2007b). Assessment of the Stability of Pesticides During the Cryogenic Processing of Fruits and Vegetables. Food Addit. Contam. 24, 1247–1256.

ISO (International Organization for Standardization). (2012). Animal feeding stuffs—Guidelines for sample preparation. Standard no. 6498. ISO, Geneva, Switzerland.

Maestroni, B., Ghods, A., El-Bidaoui, M., Rathor, N., Jarju, O. P., Ton, T., & Ambrus, A. (2000). Testing the Efficiency and Uncertainty of Sample Processing Using 14C-Labelled Chlorpyrifol: Part I and Part II. Pages 49–72 in Principles and Practices of Method Validation; Fajgelj, A., Ambrus, Ä., eds. Royal Society of Chemistry, Cambridge, United Kingdom.

Peterson, L., Dahl, C. K., & Esbensen, K. H. (2004). Representative mass reduction in sampling—A critical survey of techniques and hardware. Chemom. Intell. Lab. Syst. 74, 95–114.

APHL (Association of Public Health Laboratories). (2017). Best Practices for Submission of Actionable Food and Feed Testing Data Generated in State and Local Laboratories. APHL, Silver Spring, MD.

FDA (Food and Drug Adminstration). (XXXX). Investigations Operations Manual. FDA, Washington, DC.

ISO (International Organization for Standardization). (2012). Animal feeding stuffs Guidelines for sample preparation. Standard no. 6498. ISO, Geneva, Switzerland.

Partnership for Food Protection (PFP)-FDA. (XXXX). Human and Animal Food Testing Best Practices Manual (in press).

Leah S Riter, Chad E Wujcik, Novel Two-Stage Fine Milling Enables High-Thoughput Determination of Glyposate Residues in Raw Agricultural Commodities (2018) JAOAC 101

Sud Sushant, Kamath Archana. Methods of Size Reduction and Factors Affecting Size Reduction in Pharmaceutics. Int. Res. J. Pharm. 2013 4(8): 57-64.

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