Mineral Cartridges are also known as alkaline filter & is installed after RO Membrane filter, to give soothing & sweet taste to the pure drinking water. This Mineral Filter also makes the water healthy for drinking by increasing the pH value of drinking water to above 7 & imparting essential Bio minerals to the drinking water. Recommended for those suffering from Acidity problem. The Mineral cartridge can be used as substitute of Post Carbon Filter. You can install this filter yourself without the help of any technician. This filter is Manufactured through high precision Injection Molding process from Certified Food Grade Plastic and contains filter media of good quality. Fully Transparent Black silica balls normalize pH value , anti bacterial balls saves water from bacteria