MSR Guardian™ Gravity Purifier

Advanced virus protection in a convenient, high-capacity gravity-fed system.

The Guardian Gravity Purifier ensures reliable access to clean water across the globe, effortlessly eliminating viruses, bacteria, protozoa, sediment, and microplastics. Requiring no hands-on operation, it can be hung up while individuals carry on with their day at a hostel, basecamp, or campsite. Its generous 10-litre reservoir provides enough water to support the daily needs of several people. Initially developed to safeguard servicemembers in the field, this durable purifier is built to endure the rigours of travel and has been tested to meet the NSF P248 military standard.

Features

• Comprehensive Virus Protection: Certified to meet the NSF P248 military testing standard, it eliminates 99.99% of viruses, 99.9999% of bacteria, 99.9% of protozoa, as well as sediment and microplastics—even from highly compromised water sources.
• Improved Water Flavour: Its dual-stage purification system includes activated carbon, which helps reduce chemical residues and neutralises unpleasant tastes and odours.
• Effortless Refilling: The 10-litre reservoir can be conveniently filled from both sinks and streams, providing sufficient water for drinking, cooking, and hygiene throughout the day.
• Hassle-Free Cleaning: The system requires no backflushing; a simple opening of the purge hose effectively flushes the interior, preserving flow rate and performance.
• High Flow Rate: Delivers up to 1 litre of purified water in just 2 minutes when hung at the optimal height of 6 feet—more than twice as fast as the next leading gravity-fed purifier.
• Designed for Adventure: Constructed to military-grade durability, the compact system is tough enough for demanding travel and fits neatly in smaller backpacks or carry-on luggage.
• NSF P248 Certification: Recognised as the most stringent scientific benchmark, this certification confirms the device’s ability to remove contaminants from extreme backcountry water sources. Guardian remains the only purifier on the market to successfully meet this military-grade standard for virus removal.
  
  

Conforms to the U.S. EPA Guide Standard and Protocol for Testing Microbiological Purifiers.

Specifications

Video