ASTM D4928
Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration
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About This Item
ASTM D4928 is the ASTM standard titled Standard Test Method for Water in Crude Oils by Coulometric Karl Fischer Titration. It provides a defined approach for measuring water content in crude oil samples, which is important for quality control, custody-related decisions, and laboratory reporting. By using a recognized test method, users can support more consistent results and reduce uncertainty when evaluating crude oil condition, handling, and specification compliance. This makes ASTM D4928 a practical reference for routine analytical work.
Overview of ASTM D4928
This standard focuses on determining water in crude oils using coulometric Karl Fischer titration, a commonly used analytical technique for moisture measurement. ASTM D4928 gives laboratories and testing organizations a technical basis for performing the analysis in a consistent way. Because water content can affect crude oil valuation, processing behavior, and downstream handling, the method is relevant wherever reliable moisture data is needed. It is best used as a controlled test standard for laboratory measurement rather than a general product specification.
Common use cases of ASTM D4928
ASTM D4928 is commonly used in crude oil laboratories, inspection workflows, and quality control programs where water determination is needed for reporting or acceptance decisions. It may support incoming material checks, production monitoring, and routine sample analysis tied to crude oil evaluation. The standard is also useful when laboratories want a recognized test method for coulometric Karl Fischer titration results, helping ensure that measurements are consistent, comparable, and suitable for technical documentation or contractual review.
Benefits of using ASTM D4928
Using ASTM D4928 helps create a repeatable framework for water measurement in crude oils, which is valuable for compliance, quality assurance, and procurement processes. A recognized standard can improve confidence in test results and make laboratory data easier to compare across organizations. It also supports better decision-making by providing a clear method for evaluating moisture content, which may reduce disputes, rework, and risk in crude oil handling and analysis.
- Water content testing for crude oils
- Coulometric Karl Fischer titration method
- Laboratory quality control reference
- Consistent analytical reporting
- Technical review for crude oil evaluation
- Publication Date: 2025-01-16
- Publisher: ASTM
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