Definitioner
Total Acidity
the total of all forms of acidity, including mineral acidity, carbon dioxide and acid salts. Total acidity is usually determined by titration with a standard base solution to the phenolphathlein endpoint.
Titration
an analytical process in which a standard solution in a calibrated vessel is added to a measured volume of sample until an end point, such as color change, is reached. From the volume of the sample and the volume of standard solution used, the concentration of a specific material may be calculated.
Mineral
a term applied to inorganic substances, such as rocks and similar matter found in the earths strata, Minerals normally have definite chemical composition and crystal stucture. The term also applied
to matter derived from minerals, such as inorganic ions found in water.
Endpoint
the point at which a process is stopped because a predetermined value of a measurable variable is reached, the endpoint of an ion exchanger water softener service run is the point at which the hardness of the softener effluent increases to a predefined concentration, often 1.0 grain per gallon; the endpoint of a filter service run may be the point at which the pressure drop across the filter reaches a predetermined value; the endpoint of a titration is the point at which the titrant produces a predetermined color change, ph value, or other measurable characteristic.
Carbon Dioxide
a gas present in the atmosphere and formed by the decay of organic matter;the gas in carbonated beverages; in water it forms carbonic acid.
Base
A substance which releases hydroxyl ions when dissolved in water. Bases react with acids to form a neutral salt and water.
Acid
A substance which releases hydrogen ions when dissolved in water.Most acids will dissolves the common metals, and will react with a base to form a neutral salt and water.
