Certified reference materials (CRMs) ensure accuracy and reliability in analytical workflows–but only if they are accurate and reliable themselves. A certificate of analysis (CoA) affirms the integrity of CRMs to reinforce the unbroken chain of traceability.
A CoA for CRMs provides comprehensive details about the material’s composition, purity, and traceability. It lists certified values for specific analytes, outlines measurement uncertainties, describes the analytical methods employed, and ensures traceability to national or international standards. By verifying that the CRM meets rigorous quality criteria, the CoA supports reliable calibration, method validation, and quality control in analytical laboratories. This document is key to ensuring the accuracy and dependability of results derived from the CRM.