Testing accuracy in a QC Lab refers to the precision and correctness of test results, ensuring they closely match the actual properties of samples. It's vital for quality control, reliability, and meeting standards. Methods include reference materials, inter-lab comparisons, and equipment calibration. High accuracy is crucial for consistent, reliable products and regulatory compliance.

Learning Outcomes
1.Define error, accuracy, precision, and tolerance.
2.Understand differences between random and systematic error and their sources.
3.Define repeatability and reproducibility, and methods to minimize random and systematic errors, while grasping the implications of testing errors.