Patent ID: 7807466

Claim:
A method of testing a fat content of an item comprising: placing the item within a filtration container comprising: a container body configured for retaining an item the fat content of which is to be analyzed by hydrolysis, wherein the container body is formed with solid side walls, a closure for the container body; and a porous filter that exhibits both hydrophilic and oleophobic properties and is configured to allow for the transmission of water therethrough, wherein the porous filter is contained within the container body in abutment about its periphery with the solid side walls thereof and slidable therein between a first position at which the filter defines in cooperation with the solid side walls a first container volume and a second position at which the filter defines in cooperation with the solid side walls a second container volume; determining the combined weight, and then performing: solvent extraction of fat from the item and re-weighing the container and remainder of the item to determine a fat content.