{"term":{"id":"09965","title":"relative molecular-mass exclusion limit","longtitle":"IUPAC Gold Book - relative molecular-mass exclusion limit","doi":"10.1351\/goldbook.09965","code":"09965","status":"current","synonym":"<em>synonym<\/em>: molecular-weight exclusion limit","definitions":[{"id":1,"text":"Maximum value of the relative molecular masses of components in a specific polymer solvent system that can enter into the pores of the porous non-adsorbing material used in size-exclusion chromatography.","notes":{"1":"For particles with relative molar mass greater than the exclusion limit the separation effect of the size-exclusion chromatography vanishes."},"sources":["PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 212 (https:\/\/doi.org\/10.1515\/pac-2017-0111)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/09965\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/09965\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/09965\/plain"},"citation":"Citation: 'relative molecular-mass exclusion limit' 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.09965","license":"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.","collection":"If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .","disclaimer":"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.","accessed":"2026-04-19T05:42:13+00:00"}}