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Older scientist analyzing test sample to determine test method precision via ASTM E691.
ANSI | ASTM Testing | Quality Management

ASTM E691-23: Interlaboratory Study to Determine Test Method Precision

ByBrad Kelechava February 15, 2023June 4, 2025

ASTM E691-23: Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method features techniques for planning, conducting, analyzing, and treating…

Three red darts find a bulls eye to depict accuracy and precision in ISO 5725-2:2019 that is repeatable.
ANSI | Laboratory

ISO 5725-2:2019 – Accuracy Method For Repeatability

ByBrad Kelechava December 26, 2019June 5, 2025

Through the scientific method, repeatability and reproducibility fortify accuracy. Unfortunately, differing operators, equipment, calibration, environment, and time introduce variations and potential inaccuracies in measurements. An…

Evaluation of Precision of Quantitative Measurement Procedures
ANSI | Laboratory

CLSI EP05-A3: Evaluation of Precision of Quantitative Measurement Procedures

ByBrad Kelechava April 21, 2016May 30, 2025

Precision, accuracy, reproducibility, and repeatability are key components of the scientific method. Without precision, the validity of laboratory experiments can come into question. Because of…

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