Lewatit® CNP 80 is a weakly acidic, macroporous, acrylic-based cation exchange resin of standard bead size distribution. Due to its very high total and operating capacity, excellent chemical and mechanical stability together with high resistance to osmotic shock, it is preferable used for dealkalization. The arrangement with strong dissociated cation exchanger (Lewatit® MonoPlus S 108), in demineralization nits leads to higher regeneration efficiency.