ASTM D287 is the standard test method for determining the API gravity of crude petroleum and petroleum products using a hydrometer method. It provides a consistent way to measure relative density in a form widely used for product evaluation, custody transfer support, and quality control. For buyers and technical teams, this ASTM standard helps identify the correct document for routine testing and comparison of petroleum materials where API gravity is an important property.

Overview of ASTM D287

The official title of ASTM D287 shows that it focuses on API gravity measurement for crude petroleum and petroleum products by hydrometer. In practical terms, the standard gives a recognized test method for assessing how light or heavy a petroleum material is relative to water. That makes it useful in technical documentation, laboratory testing, and purchasing workflows where a stable, repeatable method is needed. ASTM D287 is commonly selected when a clear reference is required for density-based evaluation.

Common use cases of ASTM D287

ASTM D287 is commonly used in laboratories and fuel-quality workflows that need a standard method for API gravity testing. It is relevant for crude petroleum, refined petroleum products, and other related hydrocarbon materials where hydrometer measurements are appropriate. The standard may support incoming material checks, routine quality control, and product comparison during handling or transfer. In these settings, ASTM D287 helps align test results with a recognized industry method.

Benefits of using ASTM D287

Using ASTM D287 supports consistent API gravity measurement with a well-known ASTM test method. That consistency can improve comparison between labs, reduce ambiguity in specifications, and support compliance-oriented documentation. It also helps procurement and quality teams reference the same technical basis when evaluating petroleum materials. For organizations that rely on repeatable results, ASTM D287 offers a practical standard for routine testing and risk reduction.

• API gravity measurement by hydrometer
• Crude petroleum and petroleum products
• Routine laboratory and quality control use
• Standardized reference for comparison
• Technical support for material evaluation