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- A measurement for liquids to determine acidity or alkalinity. On a scale of one to 14, seven is considered neutral. Below sever is acidic and above seven is alkaline. This is a factor in the health or activity levels of fish.
AZGFD - Cite This Source - This Definition
- The hydrogen ion content, or the acidity or alkalinity of any substance. Most fish prefer a neutral pH range, about 7. A low pH means acidic water; high pH is caustic or alkaline. Either condition in extreme can be harmful to fish.
Idaho Fish and Game - Cite This Source - This Definition
- acidity, Alkalinity, off-color
- Logarithmic measure of acidity/alkalinity of a solution. A pH of 7 is neutral (e.g. pure water), whereas below 7 is acid and above 7 is alkaline.
UN Food and Agriculture Organization - Cite This Source - This Definition
- desoxyribonucleic acid, diagnostic procedure, EDTA, homopolymer, litmus paper, Nucleic acids, sucrose density gradient centrifugation, target
- The symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter. A measurement of soil acidity. A relative scale, from 0 to 14, of how acidic or basic (alkaline) a material is, where a pH of 7 is neutral, smaller readings increasingly acid. Indicator of acidity. An expression of the intensity of the basic or acid condition of a liquid. Natural waters usually have a pH between 6.5 and 8.5.
Bureau of Reclamation - Cite This Source - This Definition
- Acidic, Acidified, aqueous, Bituminous, Stator