2.3. Stability of oils and fatty acidso Peroxide value should be tested at T0, T3, T6, T12, T18, T25.o For lipid-based products, fatty acids omega 3 and omega 6 content should be tested at T0, T6, T12, T18, T25 and then yearly if applicable.o When rancidity is perceived during organoleptic test, anisidine value and free fatty acids shall be tested to get a complete understanding of the rancid notes.