Remineralization Alkaline Water Filter for Countertop RO System K19-SFKKey Feature: Replacement for K19 SFK RO System: Tested by SGS can reduce TDS, PFOA, PFOS, Chlorine, Salt, Sediment, Lead, Odor, and more. Also, it has been tested by SGS to ensure your water safety. Healthy Alkaline Minerals: This countertop ro system adds beneficial minerals such as KCaNa and Mg to make your water clean and healthy. It adjusts your water's pH to an optimal 7. 5 to improve the flavour of cooking and the taste of drinking water. Longer