UOP 313-89 is a petroleum laboratory method for evaluating nitrogen bases in petroleum distillates by color indicator titration. It is intended for technical users who need a practical way to characterize basic nitrogen compounds in distillate streams, where their presence can affect downstream processing, product behavior, or analytical interpretation. For buyers comparing UOP methods, this standard supports controlled laboratory assessment and documentation in refinery and fuel-testing environments. UOP 313-89 is a useful reference when consistent, method-based analysis of distillate samples is needed.

What is UOP 313-89?

This UOP test method focuses on the measurement of nitrogen bases in petroleum distillates using color indicator titration. As a laboratory analytical method, it is designed to help quantify or assess basic nitrogen content in distillate samples in a controlled and repeatable way. The method title points to a chemical titration approach rather than broad compositional screening, making it relevant for laboratories that need a focused analytical tool. UOP 313-89 is commonly selected when method consistency and clear test documentation are important.

Where is UOP 313-89 used?

UOP 313-89 is typically used in petroleum and refinery laboratories that handle distillate sample analysis and quality verification. It may also be relevant to QA/QC teams, analytical chemists, and technical reviewers who evaluate distillate properties for process control or product comparison. In practice, the method supports laboratory workflows where nitrogen base characterization is part of sample review, troubleshooting, or specification support. UOP 313-89 can be a practical choice when teams need an established reference for routine analytical work on petroleum distillates.

Why is UOP 313-89 important?

This method matters because nitrogen bases can influence how distillate products are evaluated and managed in technical operations. UOP 313-89 helps provide a standardized way to assess that chemistry, which supports clearer comparison between samples and more reliable laboratory records. For refinery and laboratory teams, a recognized UOP test method can improve consistency in reporting, assist with internal quality checks, and support technical decisions based on analytical results. UOP 313-89 is especially useful where dependable method selection is part of daily petroleum testing work.

• Petroleum distillate analysis
• Color indicator titration
• Nitrogen base evaluation
• Refinery laboratory use
• QA/QC and technical review