Products > Pearlcomb > Porous Panel Type Made of a synthetic resin with uniform particle size, this panel type diffuser offers outstanding performance in uniform foaming. It can also be used as a filter bed and for other applications. * Diffusers for sewage and night soil treatment plants. * Diffusers for industrial wastewater treatment plants. * Diffusers for agricultural effluent treatment. * Diffusers for livestock sewage treatment. * Diffusers for small combined purifiers. * Supply of oxygen to culture ponds. * Diffusion of exhaust gases. * Ozone diffusers.