1. [Authoritative certification] The filter is a dual N SF [IAPMO passed NSF certification] ANSI 42 and 372 lead-free filter, which can filter 99% chlorine and odor and significantly improve the taste of water. It has also passed the certification of European T V, ROHS, REACH, BPA free and Australian water standards. Only select products with relevant certification for your relatives. 2. Compatible with DLSC002 ECAM, Esam, ETAM, BCO, EC680EC800 coffee beans and espresso machines. Please check the installation instructions in the package. It is designed for advanced technology, and the installation mode is different from the original one. 3. Innovative multi-layer filtering integrated molding technology: This multi-layer technology provides different filtering efficiency when filtering various pulses. The inner layer of 0.5 m is effective for 99.99% of cysts and meets the Class I standard for special reduction. This filter contains healthy minerals in water. 4. High quality filter material: food safety, no resin, no sodium, reduce scale deposition, soften water, and is beneficial to health. Double the capacity. It lasts up to six months and is enough to hold 300 liters of clean water.