A Ceramic Filtration Primer | Manufacturing | Technical Info.

Ceramic Filtration Overview

Microporous Ceramics Microporous ceramics have a long-established, proven track record in drinking water filtration. They employ the principle of depth filtration, where particles and micro-organisms are trapped in the outer layers of the pores rather than just on the surface. The tortuous passage presented to the particulates as they pass through the outer pores, results in their retention due to obstruction, directional change or surface charge. Most are retained on the outer surface.

Key Benefits of Marathon Filters Small Pore Size. The pore size determines the minimum particle size which the product will effectively retain. The Marathon Ceramics media was developed to remove micro-organisms down to 0.2 microns in their smallest dimension. Narrow Pore Size Distribution. The range of pore sizes in the ceramic must be narrow. If it is too large, the filter will not achieve the necessary efficiency at the rated particle size or the pressure drop will be excessive. Consistency. The manufacturing process is very tightly controlled and provides for minimal piece to piece variation. Cleanability. The media can be cleaned multiple times and thus provides cost-efficient filtration. Precision. The extrusion manufacturing process, developed originally by Marathon Ceramics, produces a component with very tight tolerances on all of its dimensions. Life Indication. The tight manufacturing tolerances on wall thickness and outside diameter permit the use of a gauge to indicate when minimum wall thickness has been reached. Credibility. Against a background of successful application of this technology in the demanding backpacking and survival market, the product has extensive field experience as well as laboratory verification of its efficacy, durability and suitability for drinking water applications. Price. For the first time, there is a high performance ceramic priced for the consumer market.