Method and system for determining free fatty acid content

Abstract From the Canadian patent

The free fatty acid content of an edible oil is measured by a system including a supply of a carrier solution containing an organic solvent for dissolving the oil and a color indicating reagent and an oil sample supply connected to a flow-through colorimetric detector via a sample injection valve. The sample injection valve is movable between a load position wherein a sample stream of the oil is routed to a sample waste collector via a sample loop and a stream of the carrier solution passes through the detector via a carrier solution conduit and a measure position wherein a slug of the oil in the sample loop is introduced into the carrier solution conduit and mixed with the carrier solution …