The “S” shaped design of the Sanifoil Impeller creates agitation patterns identical to standard impellers. The difference lies in the accessibility of the underside of the blade to CIP cleaning solutions during the vessel cleaning process. The unit is a combination of an Axial Flow and Radial Impeller blade that, during the CIP process, allows the entire underside of the blade to be thoroughly exposed to the cleaning solution. The portion of the impeller closest to the hub is configured in a CIP-friendly vertical position to offset the slower relative speed near the center. The trailing edge is tapered to create an axial flow pattern, causing robust agitation and a uniform velocity across the length of the blade.