--- product_id: 44675717 title: "Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0\"x12\" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System" brand: "membrane solutions" price: "512 zł" currency: PLN in_stock: true reviews_count: 13 category: "Membrane Solutions" url: https://www.desertcart.pl/products/44675717-membrane-solutions-ro-membrane-400-gpd-reverse-osmosis-membrane-3 store_origin: PL region: Poland --- # 400 GPD high flow capacity 0.0001-micron TFC filtration 97% stabilized salt rejection Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System **Brand:** membrane solutions **Price:** 512 zł **Availability:** ✅ In Stock ## Summary > 💧 Elevate your water, elevate your life — pure refreshment on demand! ## Quick Answers - **What is this?** Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System by membrane solutions - **How much does it cost?** 512 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/44675717-membrane-solutions-ro-membrane-400-gpd-reverse-osmosis-membrane-3) ## Best For - membrane solutions enthusiasts ## Why This Product - Trusted membrane solutions brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Fit:** Standard 3"x12" size fits most under-sink RO systems for effortless upgrades. - • **Pure Powerhouse:** Delivers a robust 400 gallons per day to keep your hydration game strong. - • **Elite Filtration:** Blocks 99%+ of impurities including heavy metals and harmful minerals for crystal-clear water. - • **Certified Confidence:** NSF/ANSI 58 tested and approved for uncompromising water safety. - • **Long-Lasting Freshness:** Dry-shipped and durable membrane lasts 2-3 years, ensuring consistent premium water quality. ## Overview The Membrane Solutions 400 GPD RO Membrane is a premium 3"x12" reverse osmosis filter designed for under-sink home water purifiers. Featuring a 0.0001-micron Thin Film Composite membrane, it achieves a 97% salt rejection rate and removes over 99% of contaminants including heavy metals and organic materials. Certified to NSF/ANSI 58 standards, this membrane delivers high flow and long-lasting performance, typically lasting 2-3 years depending on water quality. Its universal sizing ensures compatibility with most standard RO housings, making it a reliable upgrade for clean, crisp drinking water. ## Description Filters for Your RO System Visit the Store Filters for Your RO System Visit the Store More RO Membrane and Housings Visit the Store More RO Membrane and Housings More Pre-filters Available Visit the Store More Pre-filters Available Review: RO membrane cartridge. - Perfect fit for my RO BUDDIE. Easy to install. Output RO water PPM is around 4 to 5 ppm. Great way to rejuvenate my RO system. Great value. Review: Lower measurement - Great filter, arrived quickly and price is good. Easy to install and package well. Water tastes great. TDS measures 29ppm after install before it was 80ppm. Water at non filter, measured 600ppm. The 29ppm will drop after some use. ## Features - Membrane Solutions ROULP-3012-400 reverse osmosis membrane for home drinking water treatment or maple syrup filter systems are among the most reliable and consistent elements in the industry. - With the industry-standard 12" x 3" size, this high capacity RO element fits most standard 3012 RO housing for the light commercial reverse osmosis water systems. - Our membrane elements are shipped dry in an original sealed package for convenient handling and long shelf-life. The membrane normally lasts about 2-3 years depending on your source water quality. - 400 GPD RO membrane with a high 97% stabilized salt rejection rate. Hundreds of impurities are reduced by over 99% through the 0.0001-micron TFC membrane layer, including heavy metals (fluoride, calcium, magnesium, lead, colloids, chromium, and nitrates), organic materials, and harmful minerals, including other soluble salts found in water resources. - MS Reverse Osmosis (RO) membranes are made from 100% food-grade Thin Film Composite (TFC) material for ultimate purification performance with high permeate flow, tested by an independent third-party to meet NSF/ANSI 58 standards - Tips: Recommend work pressure is 100 psi when using this product in a Maple Syrup reverse osmosis system. And we suggest heating and maintaining the raw sap at 104°F(40°C) to prevent clog on the membrane while keeping it under 113°F(45°C) to avoid damage to the membrane due to over-high temperature. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B071SGLF18 | | Best Sellers Rank | #7,905 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #59 in Replacement Under-Sink Water Filters | | Brand | Membrane Solutions | | Brand Name | Membrane Solutions | | Customer Reviews | 4.6 out of 5 stars 3,198 Reviews | | EU Spare Part Availability Duration | 2 Years | | External Testing Certification | NSF | | Global Trade Identification Number | 00850071881868 | | Item Dimensions D x W x H | 3"D x 3"W x 12"H | | Item Weight | 1 Pounds | | Manufacturer | Membrane Solutions Corp | | Manufacturer Part Number | unknown | | Material | Polyamide Thin-Film Composite | | Material Type | Polyamide Thin-Film Composite | | Model Number | ROULP-3012-400 | | Number of Items | 1 | | Product Benefits | Reduces TDS | | Product Dimensions | 3"D x 3"W x 12"H | | UPC | 850071881868 | | Unit Count | 1.0 Count | ## Product Details - **External Testing Certification:** NSF - **Item Weight:** 1 Pounds - **Material:** Polyamide Thin-Film Composite - **Product Benefits:** Reduces TDS - **Product Dimensions:** 3"D x 3"W x 12"H ## Images ![Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Image 1](https://m.media-amazon.com/images/I/51xGrsk-ZjL.jpg) ![Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Image 2](https://m.media-amazon.com/images/I/81u6kiVxd0L.jpg) ![Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Image 3](https://m.media-amazon.com/images/I/71+QqNDgrOL.jpg) ![Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Image 4](https://m.media-amazon.com/images/I/71OaiITxFsL.jpg) ![Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Image 5](https://m.media-amazon.com/images/I/71ilWg9r4-L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ RO membrane cartridge. *by F***D on April 27, 2026* Perfect fit for my RO BUDDIE. Easy to install. Output RO water PPM is around 4 to 5 ppm. Great way to rejuvenate my RO system. Great value. ### ⭐⭐⭐⭐⭐ Lower measurement *by M***R on March 15, 2026* Great filter, arrived quickly and price is good. Easy to install and package well. Water tastes great. TDS measures 29ppm after install before it was 80ppm. Water at non filter, measured 600ppm. The 29ppm will drop after some use. ### ⭐⭐⭐⭐⭐ Reliable, durable, and great support for maple sap concentration *by B***S on May 1, 2026* I use the Membrane Solutions 400 GPD RO membrane for concentrating maple sap, and it’s been a strong performer. It consistently boosts sugar concentration, cutting boil time and fuel use. Even when pushed toward its upper performance limits, it continues to run reliably without major drop-off when the system is set up properly. The membrane cleans up very well and has held performance over multiple seasons with proper flushing and storage—definitely adds to its value. Customer service is also excellent. They were responsive and helpful with setup questions, which is a big plus when adapting this for sap instead of standard water use. Bottom line: Great performance, easy to maintain, long-lasting, and well-supported. I’d buy it again. ## Frequently Bought Together - Membrane Solutions RO Membrane, 400 GPD Reverse Osmosis Membrane, 3.0"x12" Water Filter Replacement for Under Sink Home Drinking RO Water Purifier System - Membrane Solutions 3012 RO Membrane Housing Kit, Universal for Semi Commercial 200/300/400 GPD Reverse Osmosis Water Filter Systems, RO Filter Housing Wrench Fittings Set - PUREPLUS 5 Micron 10" x 2.5" Whole House Sediment Home Water Filter Cartridge Replacement for Any 10 inch RO Unit, Culligan P5, Aqua-Pure AP110, Dupont WFPFC5002, CFS10, WHKF-G05, 4Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/44675717-membrane-solutions-ro-membrane-400-gpd-reverse-osmosis-membrane-3](https://www.desertcart.pl/products/44675717-membrane-solutions-ro-membrane-400-gpd-reverse-osmosis-membrane-3) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-15*