Resinex™ N is an inert material, cylindrically shaped for use as a covering layer in modern systems (counter-current systems, upflow and downflow) to protect the nozzles of the discharge system from being clogged, and to ensure an uniform distribution through the resin layer during the service run. During regeneration Resinex™ N guarranties an even penetration of the resin with the regenerant for a higher efficiency.