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This test method provides comprehensive guidelines for the qualitative identification of various finish components present on textile fabrics, yarns, or fibers. It outlines a flexible scheme involving sequential solvent extractions followed by identification using a range of instrumental analytical techniques, including infrared spectroscopy, various chromatographic methods (GC, HPLC, TLC), nuclear magnetic resonance spectroscopy, and elemental analysis. The method also incorporates direct spectroscopic measurements and chemical spot tests. It emphasizes adaptability to evolving finishing chemicals and analytical methods, alongside necessary safety precautions.