Tested and certified to effectively remove 99.9% of protozoan cysts, including both Giardia and Cryptosporidium. Ultralight, compact unit weighs less than 1 oz. and is less than 5 in. long; easily fits into any pack, luggage, or emergency kit. Simple to use--just attach and expand the straw, submerge the filter end into the water source, and drink through the straw; can be used to drink from any bottle, cup, or water source.
Proprietary blend of microscopic carbon, binder, and antimicrobial particles are sintered to create a highly porous, carbon-impregnated filter block with a tightly controlled pore structure to remove contaminants. Activated coconut shell carbon helps reduce waterborne chemicals, improves water taste, and eliminates odors. Each filter is good for 20-30 gal. (75-110 L) of water.