pH — definition (Fishing)

Fishing

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 — Arizona Game and Fish Fishing Glossary

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 — Idaho Fishing Glossary / Definitions

Science› Biotechnology and Genetics

Food Biotechnology

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 — Glossary of Biotechnology for Food and Agriculture

Science› Energy

Renewable Energy

A measure of acidity or alkalinity. A pH of 7 represents neutrality. Acid substances have lower pH. Basic substances have higher pH.

Oregon Dept of Energy — ODOE Glossary of Energy Terms retrieved 2014-06-15

Science

Water

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 — Bureau of Reclamation Glossary