Removes Bacteria & Parasites: The Microfiltration Membrane Removes 99.999999% Of Waterborne Bacteria (Including E. Coli And Salmonella), And 99.999% Of Waterborne Parasites (Including Giardia And Cryptosporidium) Removes Microplastics: Removes The Smallest Microplastics Found In The Environment (Down To 1 Micron), And Reduces Turbidity Down To 0.2 Microns Rigorous Testing: All Claims Are Verified With Laboratories Using Standard Testing Protocols Set By The Us Epa, Nsf, Astm For Water Purifiers Long Lifetime: The Microbiological Filter Will Provide 4,000 Liters (1,000 Gallons) Of Clean And Safe Drinking Water With Proper Use And Maintenance Make An Impact: For Every Lifestraw Product Purchased, A School Child In Need Receives Safe Drinking Water For An Entire School Year.Bpa Free Materials