Katadyn Combi filter cartridges activated carbon filling replacement 2 packagesThe Katadyn Combi Carbon Refill is crucial for maintaining your water filtration system. This 2 pack refill is specifically for replenishing the carbon filters in your Katadyn Combi. Moreover, it effectively reduces bad tastes, odors, chlorine, and pesticides found in water. Ensuring clean and refreshing drinking water. To maintain optimal filtration performance, you should regularly replace the carbon filters. You should replace the carbon when you