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MSR Guardian Gravity Water Purifier
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$309.95
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SKU: WX2*0720190
Overview
Built for group water treatment in camp or on the move, this gravity purifier is designed to turn untreated water into purified drinking water without the need for pumping. Its 10L reservoir and high-flow cartridge make it a practical choice for basecamp setups, remote travel, or any situation where multiple people need water on demand. The two-stage system includes activated carbon to improve taste and odor, while the simple purge-hose cleaning process avoids backflushing. It is a rugged, travel-ready option for users who want a compact purifier with virus, bacteria, protozoa, sediment, and microplastic reduction.
Why Hunters Choose the Msr
High-volume 10l
Reservoir supports group water needs
Removes Viruses,
Bacteria, protozoa, sediment, and microplastics
Activated Carbon
Helps reduce unpleasant tastes and
Simple Cleaning
No backflushing required; purge hose
Compact System
Fits in carry-on luggage and
Key Features
- 10L reservoir supports high-volume water purification for groups at basecamp or camp.
- Advanced Hollow Fiber filter removes viruses, bacteria, protozoa, sediment, and microplastics.
- Two-stage purifier includes activated carbon to reduce unpleasant tastes and odors.
- No backflushing required; opening the purge hose flushes the system for cleaning.
- Purifies up to 1 liter in 2 minutes with a high-flow cartridge system.
- Compact design fits in carry-on luggage and smaller packs.
- Meets NSF P248 military testing standard and U.S. EPA microbiological purifier protocol.
Best Used For
- Basecamp groups needing high-volume purified water from a gravity-fed setup
- Hunters and travelers who want compact purification that fits carry-on luggage or smaller packs
- Remote camps where simple cleaning and no backflushing are practical advantages
- Users prioritizing virus protection and microbiological purification standards
- Field teams needing better-tasting water from sinks, streams, or other untreated sources
Specifications
| Activated Carbon | Yes |
|---|---|
| Backflushing Required | No |
| Bacteria Removal | 99.9999% |
| Carry On Compatible | Yes |
| Cleaning Method | Opening the purge hose flushes the system |
| Epa Standard | Meets U.S. EPA standard and protocol for testing microbiological purifiers |
| Flow Rate | Up to 1 liter in 2 minutes |
| Microplastics Removal | Yes |
| Military Grade Construction | Yes |
| Nsf Standard | NSF P248 military testing standard |
| Protozoa Removal | 99.9% |
| Purifier Type | Gravity purifier |
| Reservoir Capacity | 10L |
| Sediment Removal | Yes |
| Virus Removal | 99.99% |
Pros
- High-volume 10L reservoir supports group water needs at basecamp or remote locations.
- Removes viruses, bacteria, protozoa, sediment, and microplastics from water.
- Activated carbon helps reduce unpleasant tastes and odors.
- Simple cleaning with no backflushing required; purge hose flushes the system.
- Compact system fits in carry-on luggage and smaller packs.
- Meets NSF P248 military testing standard and U.S. EPA microbiological purifier protocol.
Considerations & Trade-offs
- The 10L reservoir and gravity setup are geared toward group use, so this system is less convenient for solo trips or fast-moving travel where a smaller purifier may be easier to manage.
- The purifier is designed to handle high-volume water treatment, but it does require hanging the reservoir and waiting for gravity-fed flow rather than providing instant water on demand.
- The activated carbon stage is included to improve taste and odor, but it also means the system is built for purification and taste improvement rather than being a simple filter-only setup.
- The compact system can fit in carry-on luggage and smaller packs, but the overall design still centers on a basecamp-style water supply solution rather than an ultralight backcountry option.
Suggested Comparisons
- Gravity water filters and purifiers
- Pump water purifiers
- Portable water treatment systems
- Basecamp water storage and dispensing systems
Suggested Accessories
- Water storage reservoir
- Replacement filter cartridge
- Water collection container
- Carry bag or storage pouch
Frequently Asked Questions
What kind of water treatment does the MSR Guardian Gravity Purifier provide?
It is a gravity purifier with an Advanced Hollow Fiber filter and a two-stage purifier that includes activated carbon. The listed source data says it removes viruses, bacteria, protozoa, sediment, and microplastics, and it also reduces unpleasant tastes and odors.
How much water can the reservoir hold?
The product includes a 10L reservoir.
Does this purifier require backflushing?
No. The source data says no backflushing is required; opening the purge hose flushes the system to clean it and help maintain flow.
What standards does this purifier meet?
The source data says it meets NSF P248 military testing standard and U.S. EPA standard and protocol for testing microbiological purifiers.
Is this purifier intended for group or basecamp use?
Yes. The product description says it is a high-volume gravity system designed to clean water at basecamp, remote villages, or anywhere purified water is needed for a group of people.