Pentair Pentek NCP Series Cartridges are constructed from a carbon impregnated non-cellulose media. They offer sediment filtration, as well as taste, odor and chlorine taste & odor reduction in one cartridge. Unlike cellulose cartridges, NCP Series Cartridges can be used for municipal and non-chlorinated water applications. Pleats provide additional surface area for high dirt loading capacity, while maintaining minimal pressure drop. This combination of a pleated polyester media and carbon filtration produces an outstanding filter cartridge with extended service life. NCP Series Cartridges are excellent polishing filters, closed loop streams and are ideal for post reverse osmosis and well water applications.