2Pcs Water Filter for Philips Saeco Aquaclean CA6903, Activated Carbon Water Filter Cartridge for CA6903/10/00/01/22/47 - AliExpress
Amazon.com: Philips Calc and Water filter - 1x AquaClean Filter - Prolong machine - No descaling up to 5000 cups - CA6903/10: Home & Kitchen
Amazon.com: Philips Kitchen Appliances Philips AquaClean Original Calc and Water Filter, No Descaling up to 5,000 cups, Reduces Formation of Limescale, 1 AquaClean Filter, (CA6903/10) : Everything Else