{"term":{"id":"03756","title":"matched cells","longtitle":"IUPAC Gold Book - matched cells","doi":"10.1351\/goldbook.M03756","code":"M03756","status":"current","also defines":"<em>also defines<\/em>: reference cell, blank cell","definitions":[{"id":1,"text":"A pair of cells with closely similar optical properties are called matched cells. One cell is the sample cell while the other, the reference (or blank) cell contains the solvent or a reference solution. In double beam spectrometers, radiation is passed either simultaneously or alternately through the cells. In single beam instruments the cells are moved sequentially into the radiation beam.","contexts":[],"links":[{"term":"double beam spectrometers","url":"https:\/\/goldbook.iupac.org\/terms\/view\/D01842"}],"sources":["PAC, 1988, 60, 1449. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - VII. Molecular absorption spectroscopy, ultraviolet and visible (UV\/VIS) (Recommendations 1988)' on page 1453 (https:\/\/doi.org\/10.1351\/pac198860091449)"]}],"altoutputs":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/M03756\/html","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/M03756\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/M03756\/plain"},"citation":"Citation: 'matched cells' 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.M03756","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":"2026-06-30T13:58:16+00:00"}}