Hach Co.: 8010: Acidity of Water by Buret Titration
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Official Method Name
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Phenolphthalein Acidity |
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Current Revision
| 2003 |
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Media
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WATER |
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Instrumentation
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Titration |
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Method Subcategory
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Inorganic |
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Method Source
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Citation
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Brief Method Summary
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Acidity is classified by the pH value of the titration end point. Various pH indicators are used depending on the pH of the end point selected. Acidity also can be determined by using a pH meter to follow the solution pH to the correct end point value as the standard base is added. |
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Scope and Application
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For water, wastewater, and seawater |
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Applicable Concentration Range
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0-10,000 |
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Interferences
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Highly colored or turbid samples with hydrolzable metals such as aluminum, iron, or manganese may mask the color change or interfer with the end point. |
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Quality Control Requirements
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Sample Handling
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Collect samples in clean plastic or glass bottles. Fill completely and cap tightly. Avoid agitation and prolonged exposure to air. Samples should be analyzed as soon as possible after collection but can be stored at least 24 hours by cooling to 4 deg. C or below. Warm to room temperature before analyzing. |
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Maximum Holding Time
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24 hours @ 4deg. C. |
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Relative Cost
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Less than $50 |
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Sample Preparation Methods
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