Patriot Pure Personal Water Filter Straw

It uses a 0.01-micron ultrafiltration membrane to reduce up to 99.9% of pathogenic bacteria, such as E. coli, Salmonella and Cholera, from the water you filter. Results vary based on the water source and usage conditions; always use the cleanest water you can find and never use water from unsafe or unknown sources.

You can sip directly through it like a straw, or attach the included silicone hose to a bag or bucket to gravity-filter larger amounts. Water passes through the 0.01-micron membrane, which traps bacteria and other contaminants as you drink or collect.

Yes, that's what it's built for, filtering most natural sources like streams, rivers and ponds into cleaner, drinkable water when used as directed. Always choose the cleanest water available and avoid unsafe or unknown sources.

It filters up to 1,320 gallons of water when used as directed, far more than many compact filters. Backwashing it now and then helps keep the flow rate up as it works.

It filters on demand as you sip or as gravity pulls water through the hose. If the flow slows, a quick backwash clears the membrane and restores it. Dirtier sources clog faster and need backwashing more often.

No. Its 0.01-micron membrane targets bacteria and other contaminants while letting dissolved minerals pass through, so it doesn't strip your water the way reverse osmosis does.

Reverse osmosis needs power, plumbing and produces wastewater, and it strips out dissolved minerals. This is a portable, gravity-and-suction filter for on-the-go use. Note that because its pores are 0.01 micron, dissolved salt passes through, so it won't desalinate seawater.

It fits in a pack and turns natural water sources into cleaner drinking water, so you don't have to carry or buy bottled water on the trail or in an emergency. One filter handles a lot of water for its size.

This is a self-contained personal filter rather than a multi-filter system. When its capacity is reached, you replace the unit. Backwashing along the way keeps it flowing longer.