Aluminumbased inorganic Anopore membrane available in three pore sizes Effective with most organic solvents and aqueous samples Low holdup volume (< 20 μl for Anotop 10) for maximum sample recovery Low protein binding filter minimizes protein loss Capillary pore structure with narrow poresize distribution Whatman Anotop non sterile syringe filters from Cytiva feature an inorganic Anopore membrane in a polypropylene housing. Inorganic aluminumbased Anopore membrane The Anotop aluminumbased Anopore membrane is compatible with most organic solvents and aqueous samples. Aluminumbased membranes are inorganic, designed for chemical inertness and functionality in a wide range of temperatures. This syringe filter is commonly used in sample preparation for analytical instrumentation. High sample recovery filter Unlike most organic membranes, the aluminum Anopore membrane has highly defined capillary pore structures and narrow poresize distribution. This structure enables a high level of consistency in particle retention.