Limit of Barium
Step-by-Step Instructions
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Prepare a test solution by adding 2 N Sulfuric Acid to the sample solution.
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Prepare a reference solution by adding water to the sample solution.
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Allow both to stand for 2 hours.
Acceptance Criteria
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The test solution is no more opalescent than the reference solution.
Tips and Cautions
Category
Guidance
Barium Seeding
For reproducible results in barium tests, "seeding" with a standard sulfate solution can improve precipitate formation consistency.
Contamination
Use high-purity reagents and acid-washed glassware to avoid trace metal contamination.