Education and Communications Do all PUR filters fit all pitchers? Do all PUR filters fit all pitchers? Each filter filters up to 40 gallons or 2 months. All PUR pitcher filters fit in all PUR pitchers and dispensers. Use only genuine PUR Filters, which are independently certified and tested. Related Posts:How to keep a mason jar soap dispensers from getting rusty?How to replace the fuel filter on a lawn mower.Are PUR filters worth it?Is Brita filter better than Pur?