UOP 818-81 is a UOP test method for evaluating thiosulfate in lean amine solutions, helping laboratories and technical teams assess a key contaminant or quality indicator in amine treating service. In refinery and chemical processing environments, this type of method supports routine sample review, troubleshooting, and product quality checks where lean amine condition can affect process reliability. UOP 818-81 is relevant to buyers who need a controlled laboratory reference for analytical work tied to amine system monitoring, documentation, and comparison of results across operating samples.

Purpose of UOP 818-81

The purpose of UOP 818-81 is to provide a standardized laboratory approach for measuring thiosulfate in lean amine solutions. As a UOP test method, it is intended to support consistent analytical evaluation of amine stream samples and to give users a reliable basis for comparison between batches, units, or operating periods. This kind of method is commonly selected when analytical chemists, refinery QA/QC personnel, and process support teams need structured data for amine system review and technical decision-making.

Laboratory use of UOP 818-81

UOP 818-81 is typically used in laboratory settings that handle petroleum and gas treating samples, especially where lean amine quality needs to be checked as part of normal plant support work. It can fit into refinery laboratories, contract testing facilities, and internal technical groups responsible for monitoring amine circulation and sample condition. Analysts and QA/QC teams may use the method during routine testing, investigative work, or documentation review when thiosulfate levels are part of the analytical question.

Practical importance of UOP 818-81

For day-to-day operations, UOP 818-81 helps provide a defined method for tracking thiosulfate in lean amine solutions, which supports clearer interpretation of sample results and more consistent laboratory reporting. That matters when teams need dependable data for process review, quality verification, or trend assessment over time. A recognized UOP method also helps reduce ambiguity when multiple laboratories, shifts, or sites compare results, making it easier for technical reviewers and operational staff to use the data with confidence.

• Lean amine solution testing
• Thiosulfate analytical review
• Refinery laboratory support
• QA/QC comparison data
• Process sample documentation
• Technical review of amine systems