Thecolourandrefractiveindicesofoilsampleswereimmediatelydeterminedwhilefreefatty
acid (FFA),acidvalue(AV)andperoxidevalue(PV)ofCPOsamplesweredeterminedmonthlyusingstandardmethods.ThecolourofCPO
containing additives(MOPEandBHT)andthatwhichcontainednoadditive(0ppm)was30.0unitsin1/200 cell.