MSR Guardian purifier assembly shown for field filtration
MSR Guardian gravity system setup ready for group backcountry use
MSR Guardian 10L reservoir hanging for gravity purification in the field
MSR Guardian universal bottle adapter attached to common bottles
MSR Guardian two-stage purifier highlighting advanced filtration
MSR Guardian activated carbon stage reduces chemicals and odors
MSR Guardian hollow-fiber membrane removes microbes from water
MSR Guardian purified water output demonstrating fast gravity filtration
MSR Guardian zippered carry case for compact storage
MSR Guardian Made in USA label on unit for quality
MSR Guardian purifier assembly shown for field filtration
MSR Guardian gravity system setup ready for group backcountry use
MSR Guardian 10L reservoir hanging for gravity purification in the field
MSR Guardian universal bottle adapter attached to common bottles
MSR Guardian two-stage purifier highlighting advanced filtration
MSR Guardian activated carbon stage reduces chemicals and odors
MSR Guardian hollow-fiber membrane removes microbes from water
MSR Guardian purified water output demonstrating fast gravity filtration
MSR Guardian zippered carry case for compact storage
MSR Guardian Made in USA label on unit for quality

MSR Guardian Gravity Water Purifier for Backcountry, Travel & Emergency Prep

The MSR Guardian Gravity Water Purifier delivers reliable, high-volume access to clean water in remote places, on the trail, and...
Vendor: MSR
Product type: Water Filtration
$602.89
$602.89
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MSR Guardian purifier assembly shown for field filtration

MSR Guardian Gravity Water Purifier for Backcountry, Travel & Emergency Prep

$602.89
MSR Guardian purifier assembly shown for field filtration
MSR Guardian gravity system setup ready for group backcountry use
MSR Guardian 10L reservoir hanging for gravity purification in the field
MSR Guardian universal bottle adapter attached to common bottles
MSR Guardian two-stage purifier highlighting advanced filtration
MSR Guardian activated carbon stage reduces chemicals and odors
MSR Guardian hollow-fiber membrane removes microbes from water
MSR Guardian purified water output demonstrating fast gravity filtration
MSR Guardian zippered carry case for compact storage
MSR Guardian Made in USA label on unit for quality

MSR Guardian Gravity Water Purifier for Backcountry, Travel & Emergency Prep

$602.89
Description
Description
x

The MSR Guardian Gravity Water Purifier delivers reliable, high-volume access to clean water in remote places, on the trail, and during emergencies. Its two-stage design blends hollow-fiber filtration with activated carbon to tackle a wide range of water quality challenges.

What sets it apart is a field-ready approach that supports group use without relying on electricity. The purifier has been tested to remove viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), as well as sediment and microplastics from even the most challenging sources, while helping reduce chemicals and unpleasant tastes and odors.

How it works in practice

  • Two-stage filtration uses hollow-fiber membranes to target viruses, bacteria, protozoa, sediments, and microplastics.
  • Activated carbon reduces chemicals and improves taste and odor for a fresher snowmelt, river, or spring source.

Fast, gravity-fed performance

  • Hang the 10-liter reservoir and purify up to 1 liter in about 2 minutes based on an optimal height of 6 ft above the clean output.

Portability and durability

  • Compact system dimensions: 12.5 x 4 inches and a lightweight 18.7 oz, easy to stash in a pack or kit.
  • PFAS-free DWR coating on the included storage case helps keep gear dry while reducing environmental impact.

What’s included and key specs

  • Two-stage purifier, 10L reservoir, universal bottle adapter, hoses and zippered carry case
  • Lifetime capacity up to 3000 L
  • Made in the USA
  • Size and weight: 12.5 x 4 inches; 18.7 oz
  • 3-year limited warranty

Use cases and benefits

Whether you’re heading into backcountry terrain, visiting remote communities, or building an emergency water kit, the Guardian offers a scalable solution for clean water when sources are uncertain. Expect clearer taste, reduced odor, and the confidence to share water with your group.

Note: Benefits are based on the product’s testing standards and features. Real-world results may vary by source water and setup conditions.

FAQ

Q: What is the MSR Guardian Gravity Purifier best for?

A: Ideal for backcountry trips, remote villages, and emergency prep, delivering safe water from challenging sources.

Q: How fast and how much water can you purify?

A: Purifies up to 1 liter in about 2 minutes with a 10-liter reservoir, depending on setup.

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Additional Information
Additional Information
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Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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