UOP 842-83 is a petroleum laboratory method for evaluating nickel, iron, sulfur, and vanadium in distillate, residual oils, and pitches by XRF. It helps technical teams assess contaminant and trace-element levels that can affect product quality, unit performance, and downstream handling. As a standards document, it supports consistent laboratory analysis when comparing feedstocks, residues, or heavy petroleum samples. For buyers reviewing analytical coverage, UOP 842-83 is relevant wherever elemental characterization is needed for refinery quality control, sample review, or technical documentation.

What is UOP 842-83?

UOP 842-83 is a UOP Test Method centered on XRF-based measurement of selected elements in petroleum materials. The method title identifies its focus clearly: nickel, iron, sulfur, and vanadium in distillate, residual oils, and pitches. In practical laboratory use, it serves as an analytical method for checking elemental composition in samples where metals and sulfur are important quality indicators. This makes it a useful reference for laboratories that need a consistent approach to trace metals testing and petroleum sample evaluation.

Where is UOP 842-83 used?

UOP 842-83 is commonly used in refinery laboratories, petroleum testing labs, and technical review groups that handle distillate, residual oils, or pitch samples. It is relevant to laboratory analysts, analytical chemists, refinery QA/QC teams, and process or product specialists who review elemental content for quality verification or feedstock comparison. Because the method is tied to XRF analysis, it fits workflows where rapid, repeatable elemental assessment supports operational decisions, sample characterization, and documentation for petroleum and heavy-residue materials.

Why is UOP 842-83 important?

UOP 842-83 matters because nickel, iron, sulfur, and vanadium can influence how petroleum materials are handled, compared, and qualified in day-to-day operations. A defined method helps teams keep analytical results consistent across batches and laboratories, which is important for quality control and technical review. For organizations working with distillates, residual oils, or pitches, the method provides a practical basis for documenting elemental composition and supporting decisions about product acceptance, process monitoring, or sample disposition.

• XRF-based elemental analysis
• Nickel, iron, sulfur, and vanadium focus
• Distillate, residual oil, and pitch samples
• Refinery QA/QC and laboratory workflows
• Useful for sample comparison and documentation