UOP 481-09 is a laboratory method for measuring water in liquid hydrocarbons and heavy hydrocarbons by vaporizer, using coulometric titration. For buyers evaluating petroleum testing standards, it supports controlled moisture assessment in sample streams where water content can affect product quality, handling, and downstream processing. This makes UOP 481-09 relevant for refinery labs, fuel testing teams, and technical reviewers who need a clear analytical method for sample evaluation and quality documentation. It is especially useful when consistent water determination is needed across hydrocarbon materials with varying composition.

What is UOP 481-09?

This UOP test method defines a laboratory approach for determining water content in liquid hydrocarbons and heavy hydrocarbons by vaporizer and coulometric titration. In practical terms, it provides a standardized way to assess moisture in petroleum and related hydrocarbon samples with analytical consistency. As a UOP test method, it fits into routine laboratory analysis where water content is an important quality attribute. It is intended for technical users who need a documented method for measurement, comparison, and reporting within refinery and chemical testing workflows.

Where is UOP 481-09 used?

UOP 481-09 is typically used in petroleum laboratories, refinery QA/QC programs, and other technical environments that evaluate liquid hydrocarbons or heavier hydrocarbon materials. Laboratory analysts and analytical chemists may use it during sample review, while quality teams and process engineers may rely on the results to support product checks and operational decisions. It is also relevant in fuel and petrochemical testing settings where accurate water measurement helps with method selection, product comparison, and routine laboratory documentation.

Why is UOP 481-09 important?

This method matters because water content can influence product quality, storage behavior, and processing performance in hydrocarbon systems. UOP 481-09 gives technical teams a defined way to generate consistent analytical results for decision support and quality verification. For laboratories, it helps strengthen test documentation and reduce ambiguity during sample evaluation. For refinery and petrochemical users, it supports more reliable comparisons between materials and helps maintain confidence in routine petroleum testing and reporting workflows.

• Water determination in liquid and heavy hydrocarbons
• Vaporizer-based sample handling
• Coulometric titration analysis
• Refinery laboratory and QA/QC use
• Support for product review and documentation