About This

• [Advanced 4-Stage Filtration] Certified by NSF/ANSI 42, our composite filter features an advanced 4-stage filtration technology. It combines a 0.01μm hollow fiber ultrafiltration membrane, fluoride removal media, a silver ion barrier, and high-density activated carbon block. This design removes 99.9% of chlorine, rust, sediment, organic compounds, and heavy metals, plus 90% fluoride. Compliant with NSF/ANSI 372 lead-free standards, it ensures safety and reliability for everyday use.
• [Innovative Fluoride Removal Technology] This black composite filter combines high-quality activated carbon and fluoride removal material (not harmful alumina). It effectively removes up to 90% of fluoride while ensuring safe use. Additionally, the filter features an ultra-fine pore size of 0.01 microns, a significant improvement over the typical 0.2 microns found in other brands, effectively removing 99.99% of contaminants, providing safer drinking water and significantly reducing health risks.
• [Compatible Models] The Purewell 4-Stage Composite Filters can be replacement for ProOne Big+ or Big II Series and Berkey BB9-2 black filters, Travel, Big, Royal, Imperial, Light, Crown Berkey Series. Thanks to its exquisite design, this filter achieves great fit and no leakage. The water filter is not sourced by or sponsored by Berkey or ProOne. Purewell is an independent brand.
• [Extended Lifespan] Each pair of composite filters provides up to 6,000 gallons of fresh water. For optimal performance, we recommend replacing the filter every 6,000 gallons, though this may vary based on your water quality. Note: TDS levels do not fully indicate water quality, and our filters are not designed to lower TDS levels.
• [Risk-free Purchase] For optimal filtration, please follow the pre-filtration instructions in the manual before installing the filter. If you experience clogging, slow flow, unusual odors, or compatibility issues, please contact us immediately for a free, quick replacement service.

Overview

• Material : Acrylonitrile Butadiene Styrene (ABS), Activated Carbon, Silver Ion, Hollow Fiber UF Membrane, Fluoride Reduction Material, Polyester, Polypropylene (PP) Acrylonitrile Butadiene Styrene (ABS), Activated Carbon, Silver Ion, Hollow Fiber UF Membrane, Fluoride Reduction Material, Polyester, Polypropylene (PP)
• Product Dimensions : 3"D x 6"W x 9"H
• Item Weight : 0.67 Kilograms
• External Testing Certification : NSF
• Product Benefits : Reduce Chlorine and Fluoride