Seychelle Water Purifier Filter Replacement &ndash; Regular Filter Replacement for 20oz Pull-top Bottle &ndash; Portable Filtered Drinking Water, Regular Water Filtration & Purification. Produces Up To 100 Gallons of Filtered Water or More Depending Upon The Quality of The Source Water Seychelle's Exclusive Filters Are The Most Laboratory and Field-Tested of Their Kind in The World. Tested to EPA Protocals and NSF/ANSI Standards 42 and 53 By Broward Testing Laboratories Reusable; Filter is Replaceable and BPA Free; Will Not Leach