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Methyl Orange Alkalinity

A measure of the total alkalinity in a water sample.

The alkalinity is measured by the amount of standard sulfuric acid required to lower the pH of the water to a pH level of 4.5, as indicated by the change in color of methyl orange from orange to pink.

Methyl orange alkalinity is expressed as milligrams per liter equivalent calcium carbonate.

See Also: Base Alkali Alkalinity Alkalinity Tests Hydroxide Alkalinity Detergent Methyl Orange Phenolphthalein Phosphate Soap Alkalinity Methyl Orange Phenolphthalein