We designed the 3M Aqua-Pure AP Series Replacement Filter Cartridges to reduce sediment, chlorine taste and odor for cleaner, clearer, better tasting water on point of use water dispensers and drinking water systems. Select models also reduce cysts,¹ lead,* select VOCs* and bacteria.² Our Scale inhibition feature on AP1-C301-S and AP1-C305-S help prevent scale buildup and unscheduled equipment service.