* Materials: UF Hollow Fiber, ABS
* Weight: 1 lb 2.7 oz / 530 g
* Width: 4 in / 10 cm
* Length: 12 in / 30 cm
* Height: 4 in / 10 cm

Effective Against:
* Bacteria: Yes
* Chemicals/toxins: No
* Particulate: Yes
* Protozoa: Yes
* Viruses: Yes

Specs:
* Filter media: Advanced Hollow Fiber
* Filter pore size (microns): 0.02
* Flow (L/min): 0.5 liters per min
* Cartridge life: 3,000+ liters
* Field cleanable: Yes
* Field maintainable: Yes
* Water Bottle Adapter: Yes
* Cartridge replacement indicator: Yes

Features:
* Ultimate Virus Protection: Meets NSF protocol P248 military testing standard for removing viruses (99.99%), bacteria (99.9999%), protozoa (99.9%), sediment and micro-plastics from “worst-case” water conditions
* Better-Tasting Water: Two-stage purifier includes activated carbon to reduce chemicals and unpleasant tastes and odors
* Easy to Fill: 10 -liter reservoir is easy to fill at sinks and streams alike; covers daily water needs for drinking, cooking and hygiene
* Simple Cleaning: No back flushing required—simply opening the purge hose flushes the system to clean it and maintain flow rate
* Fast-Flow Rate: Up to 1 liter in 2 minutes with optimal reservoir hang height of 6 feet, 2.5x faster than the next leading gravity purifier
* Engineered for Travel: Rugged, military-grade construction. Compact system fits easily in carry-on luggage and smaller packs
* NSF P248 Testing Standard: The most rigorous scientific certification for proving a treatment device safely removes claimed contaminants from challenging wilderness water sources. Guardian devices are the market’s only purifiers to pass the military standard P248 testing for virus removal