Home Felt Washing Additive FELT WASHING ADDITIVE Our product range consists of: FINOR FW 300: Works on the basic principles of polymeric and surfactant chemistry along with a conditioner for complete passivation the felt system. This optimally blended product contains polymers, surfactants and phosphonates. While polymers alter the surface charge characteristics of felt and contaminants, the surfactant keeps hydrophobic particles in colloidal and dispersed state and inhibits agglomeration of the contaminants and their deposition onto the felt.Download TDS