Discover the best way to reduce the levels of foul odours and taste and other harmful contaminants in your water system with the Kinetico Carbon Block/Chlorine/VOC Post Filter replacement. 1 x 9307 Taste, Odour, VOC & MTBE Filter Cartridge. For use with All K5 Pure, K2 and KRO GX Using the manufactures recommended replacement filters, will ensure you get the maximum efficiency levels from your K5 or K2 Drinking water System as well as the best value for money.