Alkaline Water Filter For Brita pitcher NSF Certified By Aqua Blue 3 Pack ALKALINE WATER FILTER for brita water pitcher A BALNACED PH diet optimizes your Digestive, Circulatory, Immune, Skeletal, Integumentary, Respiratory, Nervous, Excretory, Muscular and Reproductive System 1 WATER filter can replace 300 standard 16.9 ounce water bottles 100%SATISFACTION GUARANTEE if you are not happy we will take it back no question