Alkaline filters from Pearl Water Technologies, usually including calcium carbonate, raise the pH of water, making it alkaline. This may enhance taste and perhaps provide health advantages. Prices vary from ₹539-₹599. They normally last around 8,000 liters or 3-6 months. join us https://pearlwater.in/ro-filter-kit/pearl-water-carbon-filter-ultra-with-sediment-filter-ultra-combo