The Clean Sip (TM) Straw Filter uses state of the art technology in water filtration. It combines the following media for clean water:

1. Three micro filters

2. Activated charcoal

3. A patented high purty metal alloy with dissimilar metals (negative and positive). 

This means the filter will reduce the following contaminants: lead, mercury, hydrogen sulfide aluminum, arsenic, fluoride, cadmium and barium, chlorine, algae, fungus, scale, sediment and E-Coli.