OEO Ontology

Overview / Open Energy Ontology / Class - pH based unit
Label: pH based unit
Sub classes:
pH
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Definition:
"A dimensionless concentration notation which denotes the acidity of a solution in terms of activity of hydrogen ions (H+)." [Wikipedia:Wikipedia]

Back to the super classes:
concentration unit
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Definition:
"A unit which represents a standard measurement of how much of a given substance there is mixed with another substance." [UOC:GVG]

dimensionless unit
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Definition:
"A unit which is a standard measure of physical quantity consisting of only a numerical number without any units." [Wikipedia:Wikipedia]