A certified reference material is defined as a reference material, characterized by a metrologically valid procedure for one or more specified property, its associated uncertainty and a statement of metrological traceability.
RTC is unique: we are the only commercial company that is accredited to certify CRMs and has become the world leader in the production and certification of soil and sediment Certified Reference Materials. All CRMs are either natural matrix materials or natural matrices in which selected analytes have been fortified to give the resultant CRM an analyte profile that meets the needs of the market.
In certification of the RTC CRMs, data developed from multilaboratory analysis is supported by in-house data and a robust statistical program is used. Most CRMs are method specific, and the certificated show a confidence interval, uncertainty, and prediction value, expanded uncertainty, in addition to the mean value and standard deviation from the mean.
Certified Reference Material development started at RTC more than 20 years ago. We collected soils and solid wastes from contaminated sites around the United States to produce real-world CRMs for the USEPA. Since then our products range has grown and now includes a wide range of natural-matrix CRMs.
Environmental Reference Materials / Certified Reference Materials CRM Subcategories: