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pH

Scale used to measure the alkalinity or acidity of a substance through the determination of the concentration of hydrogen ions in solution. A pH of 7.0 is neutral. Values below 7.0, to a minimum of 0.0, indicate increasing acidity. Values above 7.0, to a maximum of 14.0, indicate increasing alkalinity.

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Szófaj: noun
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Ipar/Tárgykör: Geography
Kategória: Physical geography
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неутрална pH

Printing & publishing; Manufacturing; Paper; Paper production

Offset papers manufactured with a pH of 6. 0 to 8. 0 on a scale of. 0 to 14. 0. Neutral pH factors are built into paper as a minimum value, to increase stability and improve ...

pH вредност

Printing & publishing; Manufacturing; Paper; Paper production

Degree of acidity or alkalinity measured on a scale from 0 to 14 with 7 the neutral point. Measurement of pH is important to quality control in making paper and pigments and in ...

секундарен сектор

Geography; Physical geography

Manufacturing industry.

органски

Geography; Physical geography

Manure from livestock, compost from crop cast-offs.

плима

Geography; Physical geography

The periodic rise and fall of sea level due to the gravitational pull of the sun and moon. The tidal range will be determined by the relative positions of these two bodies which ...

контрола на поплави

Geography; Physical geography

measures used to reduce the frequency and the magnitude of flooding. Two approaches: Hard engineering projects which build up banks, straighten and deepen channels, divert ...