{"product_id":"duo-replacement-cartridges","title":"Duo Replacement Cartridges","description":"\u003cp\u003eThe two-stage cartridge that keeps your Duo Filter+ performing at lab-verified levels. Each cartridge pairs a sediment stage with an activated-carbon stage to keep chlorine, PFAS, and pipe sediment out of the water your skin and hair meet every day.\u003c\/p\u003e\n\u003ch3\u003eWhen to replace\u003c\/h3\u003e\n\u003cp\u003eSwap your cartridge every 30 days. Activated carbon loses capacity gradually as it works, so a fixed monthly change keeps chlorine and PFAS reduction at the levels the filter was certified to — long after a worn cartridge would have stopped pulling its weight.\u003c\/p\u003e\n\u003ch3\u003eWhat each cartridge reduces\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e99% of chlorine\u003c\/strong\u003e — tested to NSF\/ANSI 177\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e99% of PFAS\u003c\/strong\u003e (\"forever chemicals\") — tested to NSF\/ANSI 53, IAPMO verified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e99% of particulates\u003c\/strong\u003e — rust, sand, and pipe sediment, tested to NSF\/ANSI 42\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFits\u003c\/h3\u003e\n\u003cp\u003eEvery Duo Filter+ housing. Changing it takes about ten seconds — twist off the cap, drop in the new cartridge, twist it back on. No tools.\u003c\/p\u003e","brand":"Norde","offers":[{"title":"Default Title","offer_id":58693406130508,"sku":"NRD-DUO-CART","price":44.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/8913\/7228\/files\/duo-replacement-cartridges-1.webp?v=1788570359","url":"https:\/\/nordewater.com\/products\/duo-replacement-cartridges","provider":"Norde Dental","version":"1.0","type":"link"}