UOP 931-94

UOP 931-94 is a chromatography-based method for evaluating trace impurities in mixed xylenes, helping laboratories identify and compare low-level components that can affect product quality and fit for use. Built around gas chromatography, it supports routine analytical work where precise sample characterization matters in refinery and petrochemical environments. For buyers reviewing UOP 931-94, the key value is its focus on trace impurity assessment in a mixed xylene stream, making it relevant to quality control, product specification checks, and technical documentation. It is a practical reference for teams that need consistent laboratory comparison.

Purpose of UOP 931-94

The purpose of UOP 931-94 is to provide a standardized analytical approach for determining trace impurities in mixed xylenes by gas chromatography. As a UOP chromatography method, it is designed to support controlled measurement and laboratory comparability rather than broad process interpretation. This makes it useful when analysts need a defined method for checking sample cleanliness, reviewing product composition, or supporting specification-related assessment. The method title points to focused trace-level evaluation, which is important when small impurity differences can influence downstream quality decisions.

Laboratory use of UOP 931-94

UOP 931-94 is commonly suited to refinery laboratories, petrochemical QC labs, and analytical teams responsible for mixed xylene sample review. Laboratory analysts and quality specialists may use it when assessing chromatographic profiles, documenting impurity presence, or supporting product release and comparison work. Because the method is centered on gas chromatography, it fits workflows where repeatable analytical data and clear reporting are important. It may also be useful for technical reviewers who rely on standardized petroleum testing methods to compare results across laboratories or batches.

Practical value of UOP 931-94

The practical value of UOP 931-94 lies in its ability to support consistent trace impurity assessment in mixed xylenes, which can improve confidence in laboratory results and quality reviews. For organizations handling product qualification or sample evaluation, a defined UOP method helps reduce ambiguity in analytical documentation and supports more reliable comparisons between runs or facilities. UOP 931-94 is especially relevant where small compositional differences matter to QA/QC teams, analytical chemists, and technical managers working with petrochemical product data.

• Trace impurity analysis
• Mixed xylenes sample review
• Gas chromatography method
• Laboratory comparison and reporting
• Refinery and petrochemical QC support
• Technical documentation consistency