Woder Survival Water Filter Bottle Replacement Filter for the Woder 24-Sur. High Performance Water Filter extends the life of the 24oz. (24-Sur) Water Filter Bottle The Woder Survival Filter extends the life of the Woder 24-Sur Water Filter Bottle bottle by another 100 gallons (600 refills) for the removal of microbiological contaminants, chlorine, bad tastes & odors, or 30 gallons (160 refills) for removal of all contaminants. This saves you money and providing you with more portable water filtration for any situation! This TRUE SURVIVAL WATER FILTER features an Ionic Adsorption Micro filtration system that is tested capable of 99.99% reduction in 3 areas of contamination, plus bacteria & cysts: Toxic chemicals: Volatile Organic Compounds (VOC's), PCB’s, trihalomethanes, synthetic organic compounds (SOC's), detergents, pesticides, DDT, asbestos, and others. Heavy Metals: such as aluminum, cadmium, chromium, copper, lead and mercury, as well as radiologicals such as Radon 222. Unpleasant Tastes and Odors: Metallic, chemical, medicinal Microbiological Gen III Bacteriostatic Filter is tested • >99.99999 E-Coli • >99.99 Giardia, Cryptosporidium