@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix unece: <https://test.uncefact.org/vocabulary/> .

<https://test.uncefact.org/vocabulary/unit-of-measure/Q30> a skos:Concept ;
    skos:definition "The activity of the (solvated) hydrogen ion (a logarithmic measure used to state the acidity or alkalinity of a chemical solution)."@en ;
    skos:inScheme unece:unit-of-measure ;
    skos:notation "Q30" ;
    skos:prefLabel "pH (potential of Hydrogen)"@en ;
    unece:rec20Quantity "acidity and alkalinity"@en ;
    unece:rec20Sector "Physical Chemistry and Molecular Physics"@en ;
    unece:unitSymbol "pH" .