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Что (кто) такое Ph D $59982$ - определение
INSTRUMENT THAT INDICATES ACIDITY OR ALKALINITY IN WATER-BASED SOLUTIONS, EXPRESSED AS PH
Ph meter; PH-meter; Ph electrode; PH electrode; PH probe; PH-metry
Hall PH
1929 FLYING BOAT FAMILY BY HALL
User:Nigel Ish/Sandbox Hall PH; Hall PH-1; Hall PH-2; Hall PH-3; Hall PH-2 seaplane
The Hall PH was an American flying boat of the 1930s. It was a twin-engined biplane, developed from the Naval Aircraft Factory PN and could hence trace its lineage back to the Felixstowe flying boats of World War I.
pH
MEASURE OF THE ACIDITY OR BASICITY OF AN AQUEOUS SOLUTION
PH Scale; PH value; PH level; PH 7; ㏗; Acid and base; Acids and bases; Power of hydrogen; Pondus hydrogenii; PH balance; Ph Scale; PH Imbalance; Potential of hydrogen; Ph; Negative pH; Hydrogen-ion concentration; PH scale; Ph scale; Potentia Hydrogenii; Neutral solution; Potential Of Hydrogen; P.H.; P.h.; P H; PH strip; Potential hydrogen; Ocean acidity; Seawater scale; P.h. scale
¦ noun Chemistry a figure expressing acidity or alkalinity on a logarithmic scale on which 7 is neutral, lower values are more acid, and higher values more alkaline.
Origin
early 20th cent.: from p representing Ger. Potenz 'power' + H, the symbol for hydrogen (the pH being derived from the reciprocal of the hydrogen-ion concentration).
PH
MEASURE OF THE ACIDITY OR BASICITY OF AN AQUEOUS SOLUTION
PH Scale; PH value; PH level; PH 7; ㏗; Acid and base; Acids and bases; Power of hydrogen; Pondus hydrogenii; PH balance; Ph Scale; PH Imbalance; Potential of hydrogen; Ph; Negative pH; Hydrogen-ion concentration; PH scale; Ph scale; Potentia Hydrogenii; Neutral solution; Potential Of Hydrogen; P.H.; P.h.; P H; PH strip; Potential hydrogen; Ocean acidity; Seawater scale; P.h. scale
Википедия
PH meter
A pH meter is a scientific instrument that measures the hydrogen-ion activity in water-based solutions, indicating its acidity or alkalinity expressed as pH. The pH meter measures the difference in electrical potential between a pH electrode and a reference electrode, and so the pH meter is sometimes referred to as a "potentiometric pH meter". The difference in electrical potential relates to the acidity or pH of the solution. Testing of pH via pH meters (pH-metry) is used in many applications ranging from laboratory experimentation to quality control.
