Replacement ceramic filter element for both MSR MiniWorks and WaterWorks microfilters Carbon core removes unpleasant tastes and odors caused by organic compounds, such as iodine, chlorine, and pesticides. Ceramic and carbon media meets NSF Protocol P231 for the removal of 99.9999% of bacteria and 99.9% of protozoa from beginning to the end of filter life in 'worst-case' water Easily field maintainable and cleanable to reach maximum life and maintain flow rates Ceramic caliper clearly lets you know when it is time to replace your filter Weight: 3.8 oz (0.11 kg). Size: 2in x 4.6in (12cm x 4.9cm). Cartridge Life: 2,000 liters. Made in the USA