{"product_id":"microline-50-gpd-tfc-membrane-s1229rs","title":"Microline S1229RS TFC Reverse Osmosis Membrane 50 GPD","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis thin film composite (TFC) reverse osmosis membrane is the factory-specified replacement for Microline TFC-35A, TFC-35S, TFC-335, TFC-435, TFC-300, TFC-400, TFC-400-ESP, and Impression 4 RO systems. Producing 50 gallons per day, this membrane represents an upgrade from the original 35 GPD model it replaced — while retaining the same part number, it delivers meaningfully improved output capacity without any changes to fit or installation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAs the core of any reverse osmosis system, the membrane is responsible for the heavy lifting — rejecting dissolved solids, contaminants, and impurities at the molecular level to produce clean, purified water. Its push-in with O-ring connection makes replacement straightforward, and the membrane should be replaced every 24 months under normal use conditions to ensure your system continues to perform at its rated capacity. Water quality and usage levels may affect how frequently replacement is needed.\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eTFC (thin film composite) membrane produces 50 GPD — an upgrade from the original 35 GPD model it superseded, with the same part number and fit\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eDirect replacement for Microline TFC-35A, TFC-35S, TFC-335, TFC-435, TFC-300, TFC-400, TFC-400-ESP, and Impression 4 RO systems\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003ePush-in with O-ring connection for straightforward replacement\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Microline","offers":[{"title":"Default Title","offer_id":43671920083125,"sku":"S1229RS","price":68.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0629\/1197\/1509\/files\/microline-microline-50-gpd-tfc-membrane-s1229rs-s1229rs__36769.1691451001.1280.1280.jpg?v=1773763868","url":"https:\/\/ispwaterproducts.com\/products\/microline-50-gpd-tfc-membrane-s1229rs","provider":"ESP Water","version":"1.0","type":"link"}