Certified by TV SD, NSF: Our filter is tested and certified by TV SD for the reduction of chlorine, fluoride, heavy metals and other potentially harmful contaminants in water. This filter is NSF 372 certified for lead-free material. It has been tested and certified against NSF 42 to reduce chlorine, bad taste and odor. Clean and Great Tasting: The premium ion-exchange resin and granular activated carbon used are effective in reducing chlorine, taste, odor in water to improve water quality and deliver fresh water. 1 Months' Refreshment: For best results and continuous refreshment, its recommended to replace your filter every 1 month, which will vary based on your water quality. Replacement Model: Replacement for Brita Maxtra+, replacement for Brita jugs, Marella, Marella XL, Marella Cool, Style, Style XL, Elemaris XL, Aluna, Aluna Cool, Mavea Elemaris system and Marella system, old Brita series of jugs. Also replacement for AmazonBasics, Philips, Dafi and Aquaphor jugs. Not replacement for Waterdrop, Aqua Optima, Laica and Levoit Jugs. This filter is not an original product.