Carbon Filter is usually the second stage in a water or air purification system. It uses activated carbon to remove chlorine, bad taste, odor, and harmful organic compounds. This stage is essential for protecting the main filter (like the RO membrane) and enhancing the quality of purified water or air, making it safer and more pleasant to use. For more https://pearlwater.in/ro-filter-kit/pearl-water-carbon-filter-ultra-with-sediment-filter-ultra-combo