B25 (MG) is a winning option for water filter pitcher owners which use the popular oval fit of replacement cartridges. It reduces common impurities from tap water, improves taste and removes odors while providing clean, fresh water for you to enjoy. B25 (MG) contributes to your healthy lifestyle by naturally enriching drinking water with essential and hard-to-find magnesium. Suits a range of Aquaphor water filter pithers and other models with the same fit.