Delongie replacement cartridge with ion exchange resin and activated carbon to improve coffee flavor and help protect your machine. - Why you need it: Ion exchange resin and activated carbon stabilize calcium carbonate and remove impurities such as chlorine and lime, resulting in cleaner tasting coffee. - Compatibility: Replacement cartridge for Delongie filter models, including ECAM and ETAM coffee machines, and conventional pump machines in the EC680 and EC800 series. - Performance and features: Filter life of 2 months; reduces limescale buildup in machines; designed for food-grade materials; fast and easy to install. - What it contains: Ion exchange resin and activated carbon to stabilize calcium carbonate and remove impurities. - Use scenarios: 1) Home espresso or coffee machines (ECAM/ETAM) to achieve a clearer, better tasting cup. 2) Households with hard water using EC680 or EC800 series pumps to reduce scale and maintain flavor. 3) Regular replacement to maintain consistent coffee quality after descaling or water changes.