Matrix-specific control materials for maize, soybean, cotton and canola are characterized and established as internal certified reference materials (CRM’S) for analytical methods used to support nutrient composition studies with transgenic crops. EPL is the only analytical contract research organization utilizing matrix specific CRM’s to support composition studies.

These performance monitoring practices serve as a day-to-day means of evaluating the validity of results for each batch of customer samples. In addition, control charts serve as a predictive tool for analyzing trends and identifying and solving problems before a method goes out of control.

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