Captiva 96-well dual filter plate, 0.45 μm pore size, cellulose acetate, 5/pk. Captiva filtration plates and cartridges completely remove precipitated proteins and strongly protect against HPLC column clogging. Captiva 96-well filter plates, available in 0.2 and 0.45 um pore sizes, are ideal for preparing precipitated protein samples for LC/MS. Captiva 10 and 20 um glass fiber filter plates are perfect for automated systems and for clarifying particle-laden samples.