The Nazava PROT3CT is the replacement filter element of the award winning Nazava Water Filters. The filter is tested by KEBS and WHO and over 30 other laboratories in the world. It provides water that is safe to drink. Nazava Water Filters are sold in 34 countries and used by over 600 thousand people worldwide. Nazava Water filters are the simplest, most affordable and reliable way to have pure, safe water in your house. The ceramic filter membrane has pores of less than 0.4 micrometer, 20 times smaller than a human hair, so bacteria cannot pass through. Your purified water is 100 % pathogen free. The ceramic is impregnated with Nano-silver which kills bacteria. Nazava uses high grade (1100 Iodine) certified, activated carbon from premium Indonesian coconuts that is processed to remove harmful chemicals from the water and to improve the freshness. The tap is made of pure food contact-safe ABS and very durable. The Nazava replacement filter can purify up to 7,000 litres and it lasts up to 3 years, depending on the water quality.