Crystar® aFT

Air Filtration Technology

Saint-Gobain Crystar® Filtration has developed a new range of ceramic products for air filtration, Crystar® aFT (Air Filtration Technology). Thanks to their high porosity and well-engineered microstructure, Crystar® air filters can provide very good filtration efficiency against particulate matter or aerosols combined with high air permeability. The excellent chemical and thermal resistances of the filtration media make them cleanable and reusable, hence a sustainable solution for different applications.

Regarding filtration efficiency, Crystar® air filters can provide retention levels from 80% to 100% for aerosols in the range of 1 to 10 µm (according to EN 14683 AC – surgical grade masks). The assessment of retention performance based on ISO 16890 is currently in progress.

Droplet Size

filtration efficiency as a function of droplet size (according to EN 14683 AC) for Crystar aFT

In terms of resistance to air flow, Crystar® aFT media is inherently very permeable. By a proper selection of the filter thickness, area and microstructural properties, pressure drops can be minimized in order to reduce the energy consumption related to the filtration process.

Crystar® Filtration Technology provides highly efficient microfiltration with consistent retention, low energy consumption and excellent filtrate quality; even at high fluxes.
Crystar® Filtration Technology provides highly efficient microfiltration with consistent retention, low energy consumption and excellent filtrate quality; even at high fluxes.

Crystar® aFT are available as flat boards with a thickness range from 4 to 40 mm. Special shapes can be machined to meet specific requirements regarding the filtration medium integration and use.