The Malvern Insitec APS (At-line Powder Sizer) is designed to enable powder processors make automated measurements close to the process line. The at-line approach offers users taking manual measurements the benefits of robust on-line technology, secure in the knowledge it can be upgraded to a full on-line system at a later date. The new package is based on Malvern's Insitec Voyager, a self-contained mobile Plug and Play device for on-line particle size analysis that can be moved around a plant for use on different process lines or to sample at various points in the same line. The new at-line system uses the same technology, but does not require dedicated sample ports.