A method of monitoring fluid quality is described. At least one of raw fluid quality data and processed fluid quality data is communicated from one or more portable sensor units configured for wireless communication to one or more wireless transceivers, the raw fluid quality data and processed fluid...http://www.google.com.tw/patents/US20060020427?utm_source=gb-gplus-share專利 US20060020427 - Systems and methods for fluid quality monitoring using portable sensors in connection with supply and service entities
