09050 IUPAC Gold Book - stock solution 10.1351/goldbook.09050 09050 current 1 Solution prepared by weighing an appropriate portion of a solid or by measuring out an appropriate volume of a liquid and dissolving it in the weighed mass of solvent or by adding solvent to a given volume. A stock solution is usually of a greater concentration than is needed for the chemical purpose and is diluted to give the required concentration before use. PAC, 2025, 97, 137. 'Glossary of terms for mass and volume in analytical chemistry (IUPAC Recommendations 2024)' on page 6 (https://doi.org/10.1515/pac-2023-0903) https://goldbook.iupac.org/terms/view/09050/html https://goldbook.iupac.org/terms/view/09050/json https://goldbook.iupac.org/terms/view/09050/plain Citation: 'stock solution' 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.09050 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. 2026-04-18T11:52:20+00:00