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<p>Just like making French Press coffee. Fill the outer cup with unfiltered water, plunge the press down, and drink. You can quench your thirst in seconds as you hike, camp or paddle.  Grayl’s patented electroadsorpative media creates a sub-micron trap to remove pathogens and inorganic compounds.</p><ul><li>Made of durable polypropylene</li><li>473ml capacity</li><li>Protects against 99.9999% viruses, bacteria, and protozoan cysts</li><li>Non-woven ceramic stage uses electropositive mesh to trap pathogens, allows faster flow rates and requires less pressure</li><li>Activated natural carbon traps heavy metals and industrial chemicals, and reduces odours and flavours</li><li>Integrated anti-microbial agent suppresses the growth of mold, mildew and bacteria to keep the filter fresh between uses</li><li>Loop-top lid allows for easy transport and attachment</li></ul>

Grayl Ultralight Compact Purifier

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.

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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Grayl Ultralight Compact Purifier

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