reference value pH standard

https://doi.org/10.1351/goldbook.R05234
An aqueous solution of \(\pu{0.05 mol}\) potassium hydrogen phthalate per kg water which is the reference value for the definition of pH(RVS) values in the temperature range \(0\)-\(95\ ^{\,\unicode{x26ac}}\text{C}\).
See also:
operational pH standard
,
primary pH standard
Source:
PAC, 1985, 57, 531. (Definition of pH scales, standard reference values, measurement of pH and related terminology (Recommendations 1984)) on page 540 [Terms] [Paper]
Citation: 'reference value pH standard' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.R05234 RIS BibTex EndNote
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Last revised: February 24, 2014