Carbon Filter, Claryum Filter, and Remineralizer with Microbial Boost for: The Clean Water Machine with RO & Microbial Boost (AO-US-RO-MB-4000). Not with Smartflow Systems. Reduces up to 99% of 90 harmful contaminants including lead, mercury, pesticides, pharmaceuticals, and chlorine, and more. Remineralization & Microbial Filtration – returns the healthy minerals lost in the reverse osmosis process – such as calcium, magnesium, and potassium while removing bacteria and viruses. Claryum filtration reduces harmful contaminants – those you can see, smell and taste, and those you can’t – for optimally clean water – Filters last 6 months or 365 gallons. IAPMO certified to NSF/ANSI Standards 542, 53, and 401.