---
product_id: 44762648
title: "ROULP-1812-50"
brand: "membrane solutions"
price: "€ 35.83"
currency: EUR
in_stock: null
reviews_count: 13
category: "Membrane Solutions"
url: https://www.desertcart.fr/products/44762648-roulp-1812-50
store_origin: FR
region: France
---

# 50 GPD high flow rate Universal 11.75x1.75 inch size 97% salt rejection efficiency ROULP-1812-50

**Brand:** membrane solutions
**Price:** € 35.83
**Availability:** ❌ Out of Stock

## Summary

> 💧 Elevate your hydration game with the ultimate RO membrane upgrade!

## Quick Answers

- **What is this?** ROULP-1812-50 by membrane solutions
- **How much does it cost?** € 35.83 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/44762648-roulp-1812-50)

## 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

- • **Fits Like a Glove:** Industry-standard size ensures seamless compatibility with most RO systems.
- • **Expert Support Always:** US-based customer care ready to assist you throughout your membrane’s life.
- • **Certified Peace of Mind:** NSF/ANSI 58 tested and third-party verified for trusted safety standards.
- • **Long-Lasting Reliability:** Durable membrane lifespan of 24-36 months keeps your water pure longer.
- • **Pure Performance, Every Drop:** Advanced TFC membrane filters 99%+ impurities for crystal-clear water.

## Overview

The ROULP-1812-50 is a premium 50 GPD reverse osmosis membrane made from 100% food-grade Thin Film Composite material, delivering a 97% stabilized salt rejection rate and reducing over 99% of contaminants. Designed to fit standard 11.75 x 1.75-inch RO housings, it offers broad compatibility with leading brands and a long lifespan of up to 36 months. Certified to NSF/ANSI 58 standards and backed by dedicated US-based support, it ensures safe, clean drinking water with effortless installation.

## Description

Buy Membrane Solutions Reverse Osmosis Membrane 50 GPD 11.75"x1.75" RO Membrane Water Filter Replacement Fits Under Sink RO Drinking Water Purifier System 1-Pack: Replacement Under-Sink Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Right fit - Perfect fit and works great
Review: Good quality RO membrane - Supplying with fairly clean water (filtered to 1 micron, 230 ppm after softening, charcoal filtered) I got zero (<5) ppm; the membrane it replaced was at 30 ppm on the same supply. Rated 75 gpd; I got 38 gpd on 45 psi, supply water temperature 55F. This is a reasonable ratio of actual to rating; the membranes are rated at 65 psi and 77F. 100% would buy again.

## Features

- MATERIAL RELIABILITY: 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.
- HIGH REJECTION RATE: 50 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.
- UNIVERSAL MEMBRANE SIZE: Industry-standard element size 11.75 x 1.75-inch, designed to fit in standard 1812/2012 residential-style RO membrane housings utilizing a 2-inch internal diameter. Suitable for most Reverse Osmosis Water Filtration System.
- WIDE COMPATIBILITY: Reverse osmosis water filter replacement for standard membranes including but not limited to APEC MEM-ES-50, Aquatic Life 330084, AXEON TF-1812-50, Dow Filmtec TW30-1812-50, Express Water FLTMEME50, FS TFC TFC-1812-50, GE FX12M, MC5.
- LONG-LIFE: The membrane element, shipped dry in an original sealed package, has a life expectancy between 24 to 36 months, based on average feedwater quality, temperature, and incoming water pressure.
- ON-DEMAND SUPPORT: Assistance is available from our experts, ready to answer any of your questions about your RO membrane. Have a concern or question? American based customer support is available for the life of the product. Welcome to the Membrane Solutions Family.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06XC9BVVC |
| Best Sellers Rank | #7,610 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #62 in Replacement Under-Sink Water Filters |
| Brand | Membrane Solutions |
| Compatible Water Purifier Models | APEC Water Systems ROES-50 |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,094) |
| Date First Available | February 28, 2017 |
| External Testing Certification | NSF |
| Global Trade Identification Number | 00850071881820 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.2 ounces |
| Item model number | ROULP-1812-50 |
| Manufacturer | Membrane Solutions Corp |
| Material | Polyamide Thin-Film Composite |
| Number of Items | 1 |
| Product Benefits | Provides safe-clean drinking water by reducing hundreds of impurities |
| Product Dimensions | 1.75"D x 1.75"W x 11.75"H |
| UPC | 850071881820 |
| Unit Count | 1.0 Count |

## Product Details

- **External Testing Certification:** NSF
- **Item Weight:** 0.45 Pounds
- **Material:** Polyamide Thin-Film Composite
- **Product Benefits:** Provides safe-clean drinking water by reducing hundreds of impurities
- **Product Dimensions:** 1.75"D x 1.75"W x 11.75"H

## Images

![ROULP-1812-50 - Image 1](https://m.media-amazon.com/images/I/412dbdmc2hL.jpg)
![ROULP-1812-50 - Image 2](https://m.media-amazon.com/images/I/41hxtLHLHeL.jpg)
![ROULP-1812-50 - Image 3](https://m.media-amazon.com/images/I/41ptv8yQY4L.jpg)
![ROULP-1812-50 - Image 4](https://m.media-amazon.com/images/I/51Cgmv1-fzL.jpg)
![ROULP-1812-50 - Image 5](https://m.media-amazon.com/images/I/51N3zY9WNpL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Will this work for the aquatic life buddie?**
A: Yes it is still working well for my aquatic life ro buddie.

**Q: Will this work with hydro logic stealth ro200?**
A: Yes,our 100GPD-2012 size membrane is perfectly compatible with Hydro-logic's Stealth 200 Reverse Osmosis System.

**Q: Do any of your ro membranes fit the ao smith ao-us-ro-mb-4000**
A: I am unfamiliar with the system you were referring. However I can offer you this. This is the standard in filtration systems as I know it. If the membrane meaning the RO membrane can fit in a housing that is designed for it then usually that means it will work. So an example would be if you had a 10 inch long 2 1/2 inch diameter housing for a membrane you would roughly need a 10 inch long  2 1/2 inch wide membrane lol. Something helpful for the future as well. Whenever I purchase anything I keep the instruction manual for it in the same place for everything I own. That way if I have a question I can simply go to my “library” and find my answer lol.

**Q: Will this work with an ultima vii system?**
A: Your system makes 24gpd, The membrane filter your asking about makes 50gpd. You can upgrade your system to 50gpd by making some changes to the flow restrictor.
Go to utube and view numerous videos on RO systmes. The filter will work only after some changes to your system.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Right fit
*by D***A on December 6, 2025*

Perfect fit and works great

### ⭐⭐⭐⭐⭐ Good quality RO membrane
*by A***A on December 25, 2025*

Supplying with fairly clean water (filtered to 1 micron, 230 ppm after softening, charcoal filtered) I got zero (<5) ppm; the membrane it replaced was at 30 ppm on the same supply. Rated 75 gpd; I got 38 gpd on 45 psi, supply water temperature 55F. This is a reasonable ratio of actual to rating; the membranes are rated at 65 psi and 77F. 100% would buy again.

### ⭐⭐⭐⭐⭐ Value for my money
*by S***N on January 27, 2026*

Product is as described and a great price

## Frequently Bought Together

- Membrane Solutions Reverse Osmosis Membrane 50 GPD 11.75"x1.75" RO Membrane Water Filter Replacement Fits Under Sink RO Drinking Water Purifier System 1-Pack
- APEC FI-ES-TCR-QC 10" High Capacity Inline Carbon Filter with 1/4" Quick Connect Stage-5 For Undersink Reverse Osmosis Water System

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-02-02*