| http://www.w3.org/ns/prov#value | - The pH of the aqueous solution may be raised above acidic levels, to neutrality, to pH levels near or at the corresponding isoelectric point of the aqueous solution, or to a more alkaline pH by adding a base such as lime, slake lime, powdered limestone, calcium oxide, calcium chloride, sodium hydroxide, potassium hydroxide, carbonates and bicarbonates, including sodium, potassium, and calcium carb
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