High-efficiency filtration: This filter is made of high-quality materials such as natural activated carbon from coconut shells and ion exchange resin, which can effectively reduce residual chlorine, rust, limescale and sediment on the surface. Maximum ensure the purity of drinking water and improve the taste of water. Long service life: The filtration performance of this filter is stable for a long time. To ensure effective filtration, it is recommended to replace the filter when the filter capacity reaches 150 liters. 【Good compatibility】 This filter is very easy to install, no tools are required. The filter element features sophisticated design and good compatibility, allowing you to enjoy fresh water without hassle. [Compatible Models] Replaces espresso machines with Aqua Clean filter СA6903/00, CA6903 /01, CA6903/99, CA6903 -00, CA6903-01, CA6903-99, CA6903. [Filter Element Replacement Reminder] The visual time window on the bottle cap helps you monitor the service life of the