High-quality materials : Specially selected activated carbon and resin effectively reduce impurities, calcium and magnesium ions, etc. Replacing the filter element can also soften the water and improve the taste of coffee. Precautions for replacing the filter element : To ensure the safety and freshness of drinking water, it is recommended to replace the filter element every 3 months (or 100L) so that you can control the operating time at any time. More flavorful coffee: Replacing the filter effectively inhibits the formation of scale, protects the machine and prolongs its life. Plus, the filter is made of lead-free, BPA-free, and food-safe materials, so you and your family can enjoy healthier, tastier coffee. PERFECT FIT : Thanks to its precise design, the replacement filter fits perfectly into the original coffee machine and does not leak. Other compatible models: Oracle Touch (SES990), Barista Pro (SES878), Oracle (SES980), Barista Touch (SES880), Dual Boiler (SES920), Barista