Figure 3. HPLC/UV Chromatograms (l = 220 nm; extractables profile) for a hexane Soxhlet extract of a cyclic olefin copoly- mer (12). Internal standards (IS) producing peaks in this chromatogram include: Bisphenol M at 7.6 min, 2-Fluorobiphenyl at7.8 min, and Irganox 415 at 8.7 min. The major peak in this extractables profile above the materials-based threshold is the known additive (antioxidant) Irganox 1010 (Peak 2).