دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the quality of being acid. Relative acid strength of a liquid is measured by pH. A liquid with a pH below 7 is acid. See pH.

n: The relative acid strength of liquids as measured by pH. A pH value below 7. See pH.

n: An additive that adjusts acidity and alkalinity of the drilling fluid.

n: a measure of the acidity or alkalinity of a solution, normally expressed as pH. See pH.

n: a measure of the acidity or alkalinity of a solution, normally expressed as ph. See also ph

abbr: an indicator of the acidity or alkalinity of a substance or solution, represented on a scale of 0-14, 0-6.9 being acidic, 7 being neither acidic nor basic (i.e., neutral),and 7.1-14 being basic. These values are based on hydrogen ion content and activity.

hydrostatic pressure.

n: a unit of measure of the acid or alkaline condition of a substance. A neutral solution (such as pure water) has a pH of 7;acid solutions are less than 7;basic, or alkaline, solutions are more than 7. The pH scale is a logarithmic scale. A substance with a pH of 4 is more than twice as acid as a substance with a pH of 5. Similarly, a substance with a pH of 9 is more than twice as alkaline as a substance with a pH of 8.

n: a parameter used to measure the acidity or alkalinity of a substance.