2019 AOAC Annual Meeting - Preliminary Program

Training Courses AT THE AOAC ANNUAL MEETING

GUIDANCE ON OBTAINING DEFENSIBLE TEST PORT IONS: SUBSAMPL ING FOR ANALY T ICAL LABORATORI ES Saturday, September 7 & Sunday, September 8, 9:00 am – 5:00 pm

Fee: $1,195.00 (2-day course) COURSE OVERV I EW

•Why “outliers” should not always be discarded • How to measure subsampling error • How to perform proper subsampling quality control • How to increase confidence in analytical results through error reduction • Data evaluation and decision-making issues resulting from poor subsampling

The means by which chemists and microbiologists apportion laboratory samples prior to testing can drastically affect the reliability of the results. For example, some may open a sample container and just scoop or pour a small portion of material off the top whereas others may try to obtain material from different parts of the sample for laboratory analysis. Others still may stir the sample first or employ some type of coning and quartering. Such practices may not adequately represent the material and thus introduce both random and systematic errors into the measurement process. In this course, participants will learn how to properly take a representative subsample for laboratory analysis. In addition, the crucial connection between primary sampling and laboratory subsampling will be investigated to bring efficiency and defensibility to the entire sampling and analytical process. This course incorporates concepts from the documents Guidance on Obtaining Defensible Samples and Guidance on Obtaining Defensible Test Portions. The attendees will have an opportunity to ask technical questions about the material presented and specific questions about subsampling situations they have encountered. L EARNING OB J ECT I VES • Sample Quality Criteria and its importance in subsampling • The Decision Unit and why it is critical for subsampling •Where subsampling errors originate and how to mitigate them •Why certain subsampling tools may bias samples • How to choose and correctly use subsampling tools and equipment • How to design cost effective subsampling protocols to achieve project goals •Why replicate samples yield different analytical results • How to properly split a sample

COURSE INSTRUCTOR Chuck, Ramsey, Envirostat, Inc. Chuck Ramsey is founder and president of EnviroStat, Inc., which specializes in development of and training on new and novel scientifically based methodologies to make defensible decisions.

These methodologies integrate project goals, quality control, sampling theory, and data interpretation into a single comprehensive decision-making approach. Ramsey specializes in development of sampling and laboratory subsambling protocols to meet specific project objectives for a variety of applications including food, feed, fertilizer, pharmaceutical, and environmental. He is the technical consultant to AAFCO and an EPA-recognized expert in the areas of sampling and data interpretation. Ramsey has received several specialized trainings and certifications; published numerous reports and peer-reviewed journal articles related to research on sampling for monitoring, source identifications, data analysis, and compliance determination; and has given numerous presentations at conferences, symposiums, and workshops on national and international topics, including technical, regulatory, and policy issues. REQUI REMENTS Read both GOOD Samples and GOOD Test Portions prior to the course. Available free at: https://www.aafco.org/ Publications

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