API MPMS Ch. 10.5 is a practical reference for the Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation. For teams that need a clear method basis for water determination, this document supports consistent technical review, laboratory work, and quality-related decisions tied to petroleum and bituminous materials. As part of the API MPMS series, it is especially relevant when organizations want a recognized benchmark for method selection, procurement review, or internal specification alignment. The 5th edition, published in 2013, provides a focused standard for professionals who need dependable test documentation.

What is API MPMS Ch. 10.5?

API MPMS Ch. 10.5 is an API standard document that sets out the recognized test method framework for measuring water in petroleum products and bituminous materials by distillation. It serves as a technical reference for organizations that need a consistent basis for laboratory and quality-control activities. Buyers typically use it to support method understanding, document control, and alignment with established petroleum measurement practices. As a chapter in the API MPMS series, it fits within a widely used benchmark for measurement-related work in the petroleum sector.

Where is API MPMS Ch. 10.5 used?

API MPMS Ch. 10.5 is commonly used in laboratory, inspection, operations, and QA/QC environments where water content in petroleum products or bituminous materials must be assessed with a defined method. It may be relevant in refining, terminal, storage, and pipeline-related workflows, as well as in technical documentation and procurement reviews for measurement programs. Engineering and quality teams often rely on documents like this when evaluating test procedures, comparing supplier requirements, or supporting internal consistency across sample testing and reporting.

Why is API MPMS Ch. 10.5 important?

API MPMS Ch. 10.5 matters because water content can affect product quality, handling, and downstream use, making a clear test method valuable in day-to-day technical work. A documented standard helps reduce ambiguity during inspection, lab analysis, and specification review, which supports more consistent decision-making across teams. For procurement, engineering, and quality functions, it provides a reliable reference point when defining method expectations, reviewing compliance needs, or maintaining alignment between internal procedures and industry-recognized measurement practice.

• Water determination by distillation
• Petroleum products and bituminous materials
• API MPMS measurement reference
• Quality control and laboratory use
• Inspection and technical review support
• Useful for engineering, QA/QC, and operations teams