Purewell PF-6 Black 3-Stage Composite Purification Elements, Replacement Filters for ProOne® and Berkey® Filters, ProOne® or Berkey® Big+ Water Filter System and Purewell System (2 Pack, SS Series)

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• 【Universal Compatible Models】 Purewell square activated carbon filter is a direct replacement for ProOne Big+ / Big II and Berkey BB9-2 black filters. Compatible with Berkey Travel, Big, Royal, Imperial, Light, and Crown Series, as well as the Purewell Gravity-Fed Water Filter System. Precision-engineered tight seal ensures leak-free installation and connects easily with Fluoride or Alkaline Filters for multi-stage purification. Note: Not affiliated with or sponsored by Berkey or ProOne. Purewell is an independent water purification brand.
• 【Advanced 3-Stage Filtration】 Our composite filter is certified to NSF/ANSI 42, featuring a high-performance, 3-stage filtration technology. It combines a 0.01μm hollow fiber UF membrane, silver ion barrier, and high-density activated carbon block, providing up to 99.9% removal efficiency for chlorine, rust, sediment, organic compounds, and heavy metals. Additionally, the filter meets NSF/ANSI 372 standards for lead-free materials, ensuring safe and reliable filtration for daily use.
• 【Technical Innovation】 Exceptional Small Pore Size - Purewell’s filtration elements feature an ultra-fine pore size of 0.01 microns, a significant improvement over the typical 0.2 microns found in other brands. This smaller pore size effectively removes 99.9% of contaminants, including ultra-fine particles, thus greatly reducing potential health risks. A finer pore size means greater filtration precision, providing you with cleaner and safer drinking water.
• 【Extended Ultra-Lifespan】 Featuring a 2X thicker filter wall, this square activated carbon filter increases contact time between water and media for enhanced purification performance. Each filter provides up to 10,000 gallons of purified water, while a pair delivers up to 20,000 gallons total. For best results, replace each unit at 10,000 gallons (20,000 gallons per pair), though replacement frequency may vary based on your actual water quality. Note: TDS levels do not fully reflect water quality, and this filter is not designed to reduce TDS.
• 【Cost-Effective Hydration Solution】 Each Purewell replacement water filter can replace up to 75,000 single-use plastic water bottles, helping you significantly reduce bottled water expenses over time. Designed for long-lasting performance and consistent filtration, it delivers reliable, high-quality drinking water for the whole family. Enjoy dependable daily hydration with a durable filter built for efficiency and professional-level purification in every drop.