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Stainless steel pipe fittings, clamps, and connectors arranged in industrial. Precision manufacturing, mechanical assembly, and hygienic processing systems for food and pharmaceutical industries. | Image Source: ©Artinun -stock.adobe.com

This article reviews the use of Raman spectroscopy in a series of case studies to quickly identify the iron oxide compound(s), including magnetite and hematite, on the surface of representative endcaps or piping spool pieces. The article also provides a strategy using a detergent additive to remove magnetite without performing costly electro- or mechanical polishing.