Long-Lasting RO Membrane: Specifically designed for the iSpring RCD100HCG countertop Reverse Osmosis system, this membrane is built to last up to 24 months, with performance influenced by water quality and consumption High Capacity: MCD100HC RO membrane supports a robust output of 100 gallons per day, making it suitable for small- to medium-sized families Superior Filtration: Removes up to 99% of over 1,000 contaminants, including vinyl chloride, PFAS, lead, fluoride, arsenic, asbestos, calcium, sodium and more. User-Friendly Replacement and Support: The replacement process is straightforward: simply twist and replace, without the need for any tools. Each purchase is backed by a 30-day money-back guarantee along with lifetime support