"PFAS-free" refers to the absence of intentionally added per- and polyfluoroalkyl substances (PFAS) in the formulation and manufacture of Milliken textile fabrics and finishes below 50 ppm of total organic fluorine using combustion ion chromatography or other similar methods. While PFAS chemistries are not deliberately used, trace levels may be present due to background environmental interference or limitations in current analytical detection methods.