UOP 212-04

UOP 212-04 is a laboratory test method for measuring hydrogen sulfide, mercaptan sulfur, and carbonyl sulfide in hydrocarbon gases by potentiometric titration. It is designed for professionals who need a clear analytical view of sulfur species that can affect gas quality, handling, and downstream processing. For buyers comparing petroleum and gas testing standards, this method supports targeted evaluation of sour gas characteristics and sulfur-related documentation. UOP 212-04 is a practical reference for teams that need consistent, defensible results in hydrocarbon gas analysis.

UOP 212-04 method scope

This UOP 212-04 method focuses on the determination of specific sulfur compounds in hydrocarbon gases using potentiometric titration. Its scope is centered on laboratory measurement of hydrogen sulfide, mercaptan sulfur, and carbonyl sulfide, making it relevant when sulfur-speciation information is needed for quality review or analytical reporting. As a UOP test method, it fits within routine petroleum and chemical laboratory workflows where sulfur content must be characterized with a defined and reproducible procedure. The method is most useful when the analyst needs a direct, method-based assessment rather than a general screening result.

Where is UOP 212-04 used?

UOP 212-04 is commonly used in refinery and petrochemical laboratory environments where hydrocarbon gases are evaluated for sulfur-related composition. It may be selected by laboratory analysts, QA/QC personnel, technical reviewers, and process or petroleum specialists who support product qualification and sample review. Because the method addresses hydrogen sulfide, mercaptan sulfur, and carbonyl sulfide, it is relevant wherever gas streams must be checked against internal quality expectations, operational needs, or documentation requirements. It also supports method selection when sulfur analysis is part of broader gas characterization work.

Why professionals use UOP 212-04

Professionals use UOP 212-04 to obtain a focused measurement of sulfur species that can influence gas quality and downstream treatment decisions. In day-to-day laboratory work, the method helps support consistency across sample evaluations, improves the clarity of technical records, and provides a defined approach for comparing gas samples. For QA/QC teams and analytical chemists, this kind of method is valuable because it aligns testing, reporting, and review around a recognized UOP procedure. UOP 212-04 is therefore useful when reliable sulfur-speciation data is needed for operational or quality decisions.

• Hydrogen sulfide, mercaptan sulfur, and carbonyl sulfide
• Potentiometric titration-based analysis
• Hydrocarbon gas sample evaluation
• Refinery and petrochemical lab use
• QA/QC and technical review support
• Sulfur-related quality documentation