Royal Berkey Water Filter System 3.25 Gal.with 2 Black Berkey Purifiers and 2 Fluoride Filters and Scrub Pad<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Berkey Systems is constructed of highly polished AISI 304 stainless steel.</li><li>The Black Berkey Purification Element formulation has been tested by State and EPA accredited laboratories to exceed NSF/ANSI Standard 53</li><li>The Fluoride and Arsenic Reduction Filters absorb the following unwanted elements found in drinking water: Fluoride: Sodium Fluoride， Sodium Fluorosilicate， Fluorosilicic Acid (aka Hydrofluorosilic Acid) Arsenic: V and pre-oxidized Arsenic III， other residual heavy metal ions.</li><li>Ideal for use at home with medium-sized families， travel， outdoor activities， or during unexpected emergencies</li><li>Maximum Filtration Flow Rate: Configured with 2 Black Berkey® Purification Elements， the Royal Berkey® System can purify up to 4 gallons (15.1 liters) per hour Configured with 4 Black Berkey® Purification Elements， the Royal Berkey® System can purify up to 7 gallons ( 26.5 liters) per hour</li></ul></div><img src="http://ecx.images-amazon.com/images/I/61mewPktx1L.jpg" noproxy>