But with all those complicated parts, it can be hard to determine ... As time goes one, hollow-fiber filters like the Katadyn Hiker Pro ($85) and MSR Guardian ($350) will get gummed up and ...

Subscribe today. Mainly the two filters differ in design. The Katadyn Guide Pro ($86; katadyn.com) uses a glass-fiber filtering system with a carbon core to remove off tastes. The MSR MiniWorks EX ...

The Sawyer Squeeze, Katadyn BeFree, and Platypus QuickDraw are competing for the ultimate fast, easy, and lightweight backpacking water filter. They all protect against protozoa and bacteria while ...

Katadyn this month announced two new models. Its Gravity Camp 6L and Base Camp 10L filters are touted to be the fastest flowing on the market. I tested the 6L model and was impressed with the ...