The present invention provides methods for separating one or more components of interest from a sample containing particulates and soluble materials. The method comprises the steps of: (a) filtering a sample through silica filter media whose surface silanol groups have reacted with one or more silanes,...http://www.google.com.hk/patents/US20040211724?utm_source=gb-gplus-share專利 US20040211724 - Method of separating components in a sample using silane-treated silica filter media
