The PUR PLUS Mineral Core Replacement Faucet Mount Water Filter RF-9999 is a 1-stage water filter designed for removal of lead contaminants. With a capacity of 100 gallons, this blue filter is compatible with the Pur brand and model RF-9999. Made with carbon/charcoal filtration method, this product is a reliable choice for clean and safe drinking water in your kitchen. Made in Mexico, this water filter is a convenient and efficient solution for your home water purification needs.