Replacement card for Katadyn Mini with maintenance kit that facilitates replacement and cleaning of the filter in difficult conditions such as kayaking, camping or trekking. The presented cartridge is a 0.2 μm ceramic model impregnated with silver ions. Effectively decontaminates water and eliminates bacteria, protozoa and other impurities in uncontaminated water. The cartridge is long lasting - one filtered to 7,000 liters of water. The service life depends on the quality of the water to be decontaminated.