Bwt Your filtration system is only as good as the cartridge currently in it. The BWT bestmax XL Filter Cartridge restores your filtration system to full performance — maintaining the water quality your equipment and your coffee depend on. The Details System Performance Restoration Replaces exhausted media to restore full filtration capacity — scale, chlorine, and TDS reduction back to original specification. Genuine Replacement Media Manufactured to the system's original specifications. Same performance from first use to rated capacity — not a compatible generic. Equipment Protection Continuous scale and chlorine protection for espresso machines, brewers, and ice equipment throughout the cartridge life. Scheduled Replacement Replace on the rated capacity schedule — a fresh cartridge is the routine step that keeps water quality from drifting. Authorized Dealer. Expert Support. Every Machine. Coffee Machine Depot is an authorized dealer with hands-on experience across every machine we sell. Our team helps with selection, installation guidance, and ongoing support — call us at 323-592-3303. Financing available through Click Lease and our other financing partners for qualifying purchases.