The electropositive charge extends up to 1 micron from each nanoalumina fiber to effectively cover the entire 2 micron average pore space of the media. The media does mechanically retain particles >0.5 μm, but the electropositive charge is most effective on particles <0.5 μm.

Such is the nature of electropositive attraction that even with an average pore size of 2 - 3 microns the NanoCeram® Filter Cartridge exhibits an Absolute Rating of 0.2 microns.

Argonide also manufactures NanoCeram-PAC (powder activated carbon) filter cartridges with all the same particle adsorption characteristics of our standard NanoCeram filters, but with an advanced carbon material delivering extremely high dynamic adsorption kinetics for chemical contaminants such as chlorine and iodine. Argonide uses an extremely active powdered carbon with high surface area. This carbon has an iodine number of > 1200 which is amongst the highest for activated carbon.

Most filters separate particles by the mechanisms of sieving, inertial impaction, interception and diffusion. This is true of most membranes as well as fibrous depth filters. Electropositive filters principally use adsorption (electro-adhesion) as the filtering mechanism, one that has been used for decades, either as a membrane or a fibrous depth filter.

Electropositive membranes have several disadvantages including a very low dirt-holding capacity, tendency to foul quickly, and high costs for materials, maintenance and actual operation. And a highly efficient fibrous filter that is electropositive and has a high flow is much more difficult to achieve. 

NanoCeram^® is an electropositive fibrous filter media with high particle removal efficiency as well as high dirt holding capacity. When incorporated into a pleated filter, its flowrate is equivalent to, or higher than pleated filters that are rated at 3 microns. NanoCeram^®’s absolute rating is 0.2 microns, yet the flow through a standard 2.5” diameter x 10” high cartridge is 10 gpm @ an initial pressure drop less than 2 psi. High flow rates (see below) are a characteristic of NanoCeram^® filters.

NanoCeram^® Pleated Filter Cartridges provide unusually high flow rates, yet provide extremely efficient filtration solutions for a myriad of applications. Whether used in the field, in a prefiltration mode for ultra-pure water systems, to produce laboratory or process water, in commercial/industrial water treatment, as a microbiological sampler, or as a stand-alone filtration device, a NanoCeram^® filter performs at a level never before believed possible.

The NanoCeram^® electropositive technology accomplishes this by delivering the low pressure-drop (∆P) associated with a 2 µ - 3µ filter, yet achieving a removal efficiency of 99.9% for 0.25 particles. When this patented technology is incorporated into a pleated cartridge, the additional surface area which pleating affords results in a dirt-holding capacity far exceeding other filter medias up to 25 times greater*. In fact, the filter media in a standard NanoCeram^® cartridge can capture and retain an amount of particulate which is 3.5 times its own weight.

When assembled into a robust family of standard-size filter cartridges, NanoCeram^®. delivers results that conventional separation technologies simply can't. Utilizing our patented electropositive filter technology, this cutting-edge purification process makes conventional treatment products obsolete by delivering a sustained, precise, consistent, cost-effective and highly efficient filtration process in a simple and easy to handle filter cartridge.