Depth filters are the variety of filters that use a porous filtration medium to retain particles throughout the medium, rather that just on the surface of the medium. These filters are commonly used when the fluid to be filtered contains a high load of particles because, relative to other types of filters, they can retain a large mass of particles before becoming clogged. 
- Shukla, A. A. and Kandula, J. R., 2008, Harvest and recovery of monoclonal antibodies from large-scale mammalian cell culture. BioPharm International, May 2008, p. 34-45.
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