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<p>Updated with the addition of a replaceable activated carbon element, a redesigned cap, and an updated bottle top, the latest generation of BeFree filter bottles are more durable and make your water taste better. Simply squeeze the BeFree Microfilter to get clean water to drink, and give it a shake or a swish to clean out the filter. When it's empty, it collapses to free up space in your pack.</p><ul><li>BeFree™ 0.1 micron microfilter removes harmful bacteria and cysts – lasts up to 1000L depending on water quality</li><li>Activated carbon filter removes bad tastes from natural water sources and chemical tastes from less than stellar tap water – lasts up to 200L depending on water quality</li><li>2-stage filtration works in the city or the backcountry</li><li>Filter has a fast flow rate and is easy to clean without back-flushing or special tools</li><li>Double-layer thermoplastic polyurethane is durable, packable, and easy to clean</li><li>Bottle capacity is 1L</li><li>Flip cap keeps the drinking surface clean</li><li>BPA and PVC free</li><li>Meets or exceeds FDA and EU regulations</li><li>Do not allow the cartridge to freeze after initial use</li></ul>

Katadyn BeFree AC 1L Microfilter

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Water can be treated using various types of filters, chemicals or non-chemical purification methods, or a combination. Filters on their own will not remove viruses as they are too small.

A 0.5 micron or smaller filters protozoa and some large bacteria; 0.2 micron or smaller filters smaller bacteria such as campylobacter.

The life of the filter cartridge is based on the quantity of water you can treat before the cartridge is no longer effective. This does not apply to battery operated or chemical filter systems.

Most viruses are in the 0.1 micron size range, but they can be as small as 0.002 microns.

Particulate consists of very small bits and pieces such as dirt or bugs.

Protozoa are larger than one micron and include cryptosporidium and giardia. 

Bacteria can cause illnesses such as diarrhea and dysentery and are about 1.0 micron in size, although some can be as small as 0.2 microns. 

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Katadyn BeFree AC 1L Microfilter

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