50 GPD MEMBRANE FILTER: Experience perfectly filtered water with the Watts Premier 50 GPD Membrane Replacement, designed to work seamlessly with Watts Premier reverse osmosis filtration systems, specifically with 4SV/4-Stage (WP500025), 5SV/5-Stage (WP500032), and Zero Waste (WP0950045). Please note that it is not compatible with Quick Change reverse osmosis systems. HIGHLY EFFECTIVE FILTRATION: This advanced semi-permeable membrane filter effectively reduces TDS (Total Dissolved Solids) and sodium, as well as a wide range of contaminants, such as arsenic, lead, percolate, chromium, copper, and radium. Moreover, with the ability to filter impurities down to 1/10,000 of a micron, this significantly enhances the purity of your drinking water by removing microscopic contaminants. EASY INSTALLATION: Measuring 1.8" in diameter and 10.75" in length, this membrane is designed for easy and straightforward installation and replacement in under-sink water filtration systems. It also features a check valve built directly into the membrane for efficient performance. LONG-LASTING PERFORMANCE: Crafted with high-quality materials, this membrane filter is engineered to provide superior, long-lasting performance. It has a filter rating of 2 to 5 years, but membrane life may vary based on local water conditions, use patterns, and frequency of filter changes. THE PREMIER DIFFERENCE: Since our founding in 1989, Premier has been dedicated to the design, development, and marketing of high-quality water filtration systems that exceed industry standards. Following our Watts Water Technologies in 2001, our audience and influence have only expanded, solidifying Watts Premier as a trusted leader in the industry.