---
product_id: 523529356
title: "TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane"
brand: "dow filmtec"
price: "R1743"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/523529356-tw30-1812-50hr-50-gpd-reverse-osmosis-membrane-replaces-dow
store_origin: ZA
region: South Africa
---

# 50 GPD high flow rate 99% stabilized salt rejection Made in USA, authentic quality TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane

**Brand:** dow filmtec
**Price:** R1743
**Availability:** ✅ In Stock

## Summary

> 💧 Pure Performance, Proven Worldwide

## Quick Answers

- **What is this?** TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane by dow filmtec
- **How much does it cost?** R1743 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/523529356-tw30-1812-50hr-50-gpd-reverse-osmosis-membrane-replaces-dow)

## Best For

- dow filmtec enthusiasts

## Why This Product

- Trusted dow filmtec brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Engineered for durability with max operating temp of 113°F and pressure up to 150 psig.
- • **Trusted Global Leader:** The #1 selling RO membrane worldwide—join millions who rely on Dow Filmtec.
- • **Boost Your Hydration Game:** Up to 20% greater water production than competitors means more pure water, faster.
- • **Precision Filtration Power:** 99% stabilized salt rejection ensures consistently crisp, clean water every time.
- • **Authenticity You Can Verify:** Each membrane includes a QR code for instant authenticity confirmation—no fakes here.

## Overview

The Dow Filmtec TW30-1812-50HR is a premium reverse osmosis membrane delivering 50 gallons per day with up to 20% more water output than comparable membranes. Manufactured in the USA, it offers 99% stabilized salt rejection for superior water purity and durability under high temperature and pressure conditions. Trusted globally as the #1 selling membrane, it features a QR code for authenticity verification, ensuring professional-grade filtration for undercounter and countertop RO systems.

## Description

TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane

## Features

- Authentic Dow Filmtec Membrane. Manufactured in USA.
- Up to 20% Greater Water Production
- 99% Stabilized Salt Rejection
- #1 Selling Membrane in the World

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Dow Filmtec |
| Model Number | Filmtec TW30 1812 50HR |
| Product Dimensions | 30.48 x 4.83 x 4.83 cm; 181 g |
| Material | Resin Polypropylene (PP) |
| Item Weight | 181 g |

## Product Details

- **Material:** Resin Polypropylene (PP)
- **Item weight:** 0.18 Kilograms
- **External testing certification:** NSF
- **Product benefits:** Enhances water output
- **Brand:** Dow Filmtec

## Images

![TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane - Image 1](https://m.media-amazon.com/images/I/21EsFmU8MqL.jpg)

## Frequently Bought Together

- Dow Filmtec TW30-1812-50HR 50 GPD Reverse Osmosis Membrane (Replaces Dow Filmtec TW30-1812-50) Undercounter and Countertop RO Membrane
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**Shop now:** [https://www.desertcart.co.za/products/523529356-tw30-1812-50hr-50-gpd-reverse-osmosis-membrane-replaces-dow](https://www.desertcart.co.za/products/523529356-tw30-1812-50hr-50-gpd-reverse-osmosis-membrane-replaces-dow)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-25*