UOP 99-82 is a laboratory test method for Pentane-Insoluble Matter in Petroleum Oils Using a Membrane Filter. It is designed to help professionals evaluate the amount of material in a petroleum oil sample that does not dissolve in pentane, which can be important when reviewing product cleanliness, stability, or residue-related behavior. For laboratories and refinery QA/QC teams, this method provides a clear technical reference for sample assessment and documentation. UOP 99-82 is useful when a buyer needs a recognized UOP method for petroleum oil characterization and consistent analytical reporting.

Purpose of UOP 99-82

The purpose of UOP 99-82 is to define a controlled analytical approach for determining pentane-insoluble matter in petroleum oils. Using a membrane filter, the method focuses on separating and evaluating the insoluble fraction in a sample, supporting laboratory measurement of material that may affect product quality or interpretation of oil condition. As a UOP test method, it fits into petroleum and chemical analysis workflows where consistent handling of insoluble content is needed for technical review, product comparison, or internal quality documentation.

Laboratory use of UOP 99-82

UOP 99-82 is commonly relevant in petroleum laboratories, refinery support labs, and QA/QC environments that examine oil samples for insoluble material. It may be used by laboratory analysts, analytical chemists, and technical reviewers who need a repeatable method for evaluating pentane-insoluble matter in petroleum oils. The method can also support process engineers and product quality specialists when reviewing sample condition or comparing batches. In practice, it serves as a focused reference for routine laboratory analysis and method-based reporting.

Practical importance of UOP 99-82

In day-to-day technical work, UOP 99-82 helps teams assess a specific insoluble fraction in petroleum oils with a standardized membrane-filter approach. That matters when consistency, traceability, and clear documentation are important for internal decision-making. The method can support product review, sample comparison, and quality control activities by giving laboratories a defined basis for reporting insoluble matter. For organizations working with petroleum oil evaluation, UOP 99-82 offers a practical way to align testing practices across analytical teams and review cycles.

• Pentane-insoluble matter in petroleum oils
• Membrane filter-based laboratory method
• Petroleum sample evaluation support
• Refinery QA/QC and lab workflows
• Analytical reporting and technical review
• Relevant for oil quality assessment