MSR Guardian Water Purifier for Backcountry Use, Global Travel, and Emergency Preparedness

From the manufacturer <img alt="guardian header" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/1249a5f2-e64c-4373-b3e8-849ee9078fb0.__CR0,0,1940,1200_PT0_SX970_V1___.jpg"> <img alt="Guardian Features" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/7da6d074-802f-41e1-83d4-a9ce2af2ef8e.__CR0,0,1940,1200_PT0_SX970_V1___.jpg"> <img alt="Why Guardian" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/9bb40ab3-2b0a-43cd-b09d-973bc2813742.__CR0,0,1940,1200_PT0_SX970_V1___.jpg"> <img alt="Made in the USA" src="https://m.media-amazon.com/images/S/aplus-media-library-service-media/be8a6bf0-1fa1-43fe-b573-fabd8d85ea3a.__CR0,0,970,300_PT0_SX970_V1___.jpg"> MiniWorks EX Microfilter MiniWorks EX Purifier Guardian Purifier TrailShot Microfilter AutoFlow XL Gravity Filter Guardian Gravity Purifier Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.6 out of 5 stars 4.6 out of 5 stars 4.6 out of 5 stars 4.6 out of 5 stars 4.8 out of 5 stars 4.5 out of 5 stars Price Weight 16 oz 16 oz 17.3 oz 5 oz 12 oz 1 lbs 3 oz Flow Rate (Liters per Minute) 1 L/Minute 1 L/Minute 2.5 L/Minute 1 L/Minute 1.75 L/Minute 0.5 L/Minute Cartridge Life (Liters) 2,000 Liters 2,000 Liters 10,000 Liters 2,000 Liters 1,500 Liters 3,000+ liters Effective Against Protozoa (ex: Giardia, Cryptosporidium) Effective Against Bacteria (ex: E.

coli, Salmonella, Cholera) Effective Against Viruses (ex: Hepatitis A, Norwalk, Rotavirus) Effective Against Particulates (dirt, microplastics) Effective Against Taste/Odor Testing Standards P248/P231 NSF P231 Testing For removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in "worst-case" water.