Cartridges for Large- and Ultra Large-Capacity In-Line Filter AssembliesOverview Filtration through a hydrophilic membrane is an important post processing step of ultrasonic nano emulsification, which removes particulate contamination such as dust, microorganisms, plant matter, and titanium particles. These replacement filter cartridges are compatible with our large and ultra large capacity in line filter assemblies (available here). Their hydrophilic membranes with either 0. 22 micron or 1 micron pore sizes can be used