Waterdrop Replacement Filters for Extream (NOT-FOR-WD-PT-03) Pitcher Filtration System, Last Up to 9 Months (Pack of 3) ULTRA CELAN AND FRESH WATER: The exclusive multi-stage filtration enables effective reduction of chlorine, sediment and other contaminants. Our filters will deliver fresh and crisp water to you and your family. ULTRA-HIGH ADSORPTIVE ACF: The Latest Japan developed Advanced Activated Carbon (ACF) technology allows 10 times better adsorption than ordinary carbon. Owing to silver ion antibacterial technology, the filter will effectively inhibit up to 99% bacterial growth to ensure clean water for you. NSF CERTIFIED WATER SOFTENING MATERIAL: The Ion Exchange Resin our filter used is tested and certified by NSF/ANSI Standard 61 for material safety. It will lower water hardness hence reducing limescale in tap water. 200 GALLONS' LONG-LASTING FILTER LIFE: One filter cartridge can provide you with a whopping 200 gallons of fresh water, 5 times longer than most other pitcher filters. Replace your filter every 200 gallons or about 90 days for the average household for good performance, whichever comes first and will vary based on water quality. EXCLUSIVE FAST FLOW RATE: It has an extremely high fast flow rate of 0.5 gpm, allowing instant access to fresh filtered water. The direct flow filter construction allows all water to flow through, with none retained in a filter reservoir. This will help prevent bacterial growth.