The RapidPureReplacement Purifier Cartridge lets you keep using your RapidPure Pioneer, Scout, or Intrepid for years to come. This water filter replacement element is easy to install and reduces your environmental impact by letting you reuse the same water purification system again and again. Unlike microfilters that rely on pore size to simply filter out bacteria and sediment, RapidPure water treatment actually purifies water using electroadsorption, removing bacteria, parasites, viruses, parasites, chemicals, heavy metals, pesticides, and microplastics, as well as filtering out sediment. There is no priming, pumping, or batteries required, making this fast water filter also the best water purifier for personal use. RapidPure continues to work even after it has been frozen, giving you peace of mind if the temperature suddenly drops. With RapidPure water purifiers, quenching your thirst is safer, faster, easier, and better tasting.