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pH (PHW)
DGIF baseline 2026-1, the latest. Earlier baselines: timemap.
RDF: phw.ttl
- Name
pH- Datatype
- Real
- Definition
- The logarithm of the reciprocal of hydrogen ion (H+) concentration in gram atoms per liter of an aqueous solution.
- Description
- The pH (potential of Hydrogen) scale provides an indication of the acidity or alkalinity of a water sample. The scale ranges from 0 to 14, where 7 is neutral, greater than 7 is more alkaline and less than 7 is more acidic. The measure is termed the 'pH unit'.
- Accepted
- 2013-10-18
- Defined by
- DFDD
- Physical quantity
- pureNumber
- Recommended unit
- Unitless
- Used by
- ZI024 Water Resource Information
Source: DGIF 2026-1 QEA model, DGIWG. Standard: DGIWG 206-3. Licence: CC BY 4.0, © DGIWG.