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PUREFLOW 
emergency WATER FILTER STRAW

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PUREFLOW 
emergency WATER FILTER STRAW

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your water secured

99.9% bacteria filtration

up to 1,800 gallons

ultra-light & portable

no electricity or batteries

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Survivor Filter Straw

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FLOW

Other Straws

Filter Capacity

99.9%

> 90%

Capacity

1800 Gallons

>1000 gallons

Power / Batteries

None Required

Required

Setup & Use

Instant - Sip Ready

Multi Step Setup

Safety Caps

Cleaning Ease

FAQs

Does the straw remove viruses?

The straw filters down to 0.1 microns, which blocks most bacteria, protozoa, and microplastics. While it can reduce some virus-sized contaminants, it’s not rated for full virus removal. For high-risk areas, we recommend using water purification tablets in addition to the straw.

How long does one straw last?

Each straw filters up to 1,800 gallons of water — enough to support one person’s drinking needs for nearly 10 years under average use. Simply replace the straw once water stops flowing.

What bottles is it compatible with?

The straw fits any standard 28mm threaded bottle, such as typical water or soda bottles. It also works with most gravity bag systems.

Does it change the taste of water?

No chemicals are added, so the taste remains natural. It simply removes harmful contaminants without affecting flavor.

Does it have an expiration date?

No. The straw has no expiration as long as it’s stored in a cool, dry place. Just make sure it’s completely dry before long-term storage to avoid mold or microbial growth.

Is it reusable?

Yes! The included flushing syringe allows you to clean and reuse the straw repeatedly. Proper maintenance will extend its lifespan and keep it working efficiently.

Can children use it safely?

Absolutely. The straw is easy to use and does not require strong suction. Children can drink directly from the straw or from a bottle with adult supervision.

What water sources can I use it with?

The straw is effective with most freshwater sources — lakes, rivers, streams, rainwater, and even tap water in regions with questionable safety. Avoid using it with saltwater or industrially polluted water.