14996 IUPAC Gold Book - ring test 10.1351/goldbook.14996 14996 current synonym: round-robin test 1 Part of an external quality assurance program for assessment of an analytical method or test. A reference institute sends identical samples, which have to be analyzed or tested for specified parameters, to a number of different laboratories. The laboratory has a deadline before which to provide results. Statistical evaluation and interpretation of the results permits assessment of the reliability of the methods used and a comparison of the laboratories’ proficiency. For accreditation of laboratories, regular participation in ring tests is obligatory, but accreditation is not essential for participation in the tests. PAC, 2009, 81, 829. 'Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)' on page 939 (https://doi.org/10.1351/PAC-REC-08-07-09) https://goldbook.iupac.org/terms/view/14996/html https://goldbook.iupac.org/terms/view/14996/json https://goldbook.iupac.org/terms/view/14996/plain Citation: 'ring test' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.14996 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-06-30T06:35:41+00:00