LifeStraw Activated Carbon Filters improve water taste by removing chemicals such as chlorine and odors.  The activated carbon has been treated with specific processes to open millions of tiny pores between carbon atoms. LifeStraw uses an advanced, special formulation that is made from fibers instead of traditional granulated carbon which improves longevity and performance.  This process works via adsorption - contaminants become trapped inside the pore structure of the carbon and bind to the surfaces of the fibers. Over time, once all surface areas are full, the carbon filter must be replaced. 

Please note the longevity recommendations for each product.  

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