Whatman Anotop 10 and Anotop 25 Disposable Syringe Filters Whatman Anotop 25. Combining top-notch and uncompromising quality with an affordable price the Whatman Anotop 10 and Anotop 25 Disposable Syringe Filters Whatman Anotop 25 6809-2002/ 28138-017 can fulfill your laboratory needs while still offering a great value for the money. Product Category Description: For a wide range of applications including cold sterilization of growth media phage and virus filtration removal of high molecular weight proteins or polymers and filtration of solvents for spectroanalysis. Features Anopore (aluminum oxide) membrane with precise non-deformable honeycomb pore structure. Compatible with most solvents and aqueous materials. Membrane is sealed in hexagonal-shaped precision-molded polypropylene housing complete with luer lock fittings. Use the Anotop 10 for preparing samples up to 10mL. Membrane diameter: 10mm. Hold up volume: