Cartridges combining a pre-filter element made from bt cpp la - melt-blown polypropylene and a plastic container filled with gac, made from coconut shell, designed to provide fine sediment filtration at 5, 10, 25 and 50 micron and high contact time of the water through the whole gac bed for the reduction of chlorine, taste, odour (cto) and volatile organic compounds (voc) . Bt cpp la cartridges are available with height 10" and