universal indicator

https://doi.org/10.1351/goldbook.09054
Visual indicator composed of a solution of several pH indicators (main components are thymol blue, methyl red, bromothymol blue and phenolphthalein) that changes color through a range of pH values, usually from 1 to 14.
Note:
Universal indicators are commercially available in the form of a solution or in paper strips accompanied by a color matching chart.
Source:
PAC, 2025, 97, 137. (Glossary of terms for mass and volume in analytical chemistry (IUPAC Recommendations 2024)) on page 8 [Terms] [Paper]
Citation: 'universal indicator' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.09054 RIS BibTex EndNote
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