---
product_id: 54784417
title: "Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System"
brand: "dow filmtec"
price: "€ 81.67"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/54784417-dow-filmtec-tw30-1812-100hr-100-gpd-tfc-high-rejection
store_origin: FI
region: Finland
---

# 100 GPD purified water output Shipped dry for extended shelf life 98% salt rejection efficiency Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System

**Brand:** dow filmtec
**Price:** € 81.67
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water, elevate your lifestyle — pure, powerful, and professional.

## Quick Answers

- **What is this?** Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System by dow filmtec
- **How much does it cost?** € 81.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/54784417-dow-filmtec-tw30-1812-100hr-100-gpd-tfc-high-rejection)

## 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

- • **Pressure Smart:** Optimized to perform at 50 psi, purifying 20% more water than higher-pressure rated membranes—efficiency meets innovation.
- • **Pure Powerhouse:** Delivers a robust 100 gallons of crystal-clear water daily, keeping your hydration game strong.
- • **Ready When You Are:** Shipped dry for maximum shelf life and hassle-free installation—because convenience is key.
- • **Certified Confidence:** NSF/ANSI Standard 58 certified genuine FilmTec membrane, trusted by professionals for uncompromised quality.
- • **Next-Level Filtration:** Achieves an impressive 98% salt rejection, ensuring every drop tastes fresh and clean.

## Overview

The Dow Filmtec TW30-1812-100HR is a high-rejection polyamide thin-film composite membrane designed for undersink reverse osmosis systems. It delivers 100 gallons per day of purified water with 98% salt rejection at an optimized 50 psi, outperforming many 60 psi-rated membranes. Shipped dry for extended shelf life and NSF/ANSI Standard 58 certified, this genuine FilmTec membrane ensures reliable, professional-grade water filtration.

## Description

Sponsored Ad - Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System

## Features

- Polyamide Thin-Film Composite (TFC)
- Rated at 50 psi and purifies about 20% more water than elements rated at 60 psi
- Shipped dry for convenient and a long shelf life
- Free Chlorine Tolerance: <0.1 ppm
- FilmTec genuine membrane element, NSF/ANSI Standard 58 certified

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polyamide Thin-Film Composite |
| Product Dimensions | 1.75"D x 11.74"W x 1.75"H |
| Item Weight | 0.22 Pounds |
| External Testing Certification | NSF |
| Product Benefits | Produces 100 Gallons per Day of Purified Water at 98% salt rejection (stabilized) |
| Brand | Dow Filmtec |
| Global Trade Identification Number | 08515260080850 |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | FilmTec |
| Part Number | 43208-915 |
| Item Weight | 3.52 ounces |
| Item model number | TW30-1812-100HR |
| Is Discontinued By Manufacturer | No |
| Size | 1 Count (Pack of 1) |
| Color | Blue |
| Shape | Round |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Included Components | membrane |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Polyamide Thin-Film Composite
- **Product Dimensions:** 1.75"D x 11.74"W x 1.75"H
- **Item Weight:** 0.22 Pounds
- **External Testing Certification:** NSF
- **Product Benefits:** Produces 100 Gallons per Day of Purified Water at 98% salt rejection (stabilized)

## Images

![Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System - Image 1](https://m.media-amazon.com/images/I/41v1t4ePBfL.jpg)

## Questions & Answers

**Q: Where is it manufactured?**
A: This is made in USA, Dow Filmtec geneuine membrane as it is stated on the product.

**Q: Is there a manufacturing date code on product or on package? As to gauge shelf life.**
A: Every membrane comes with manufacturer’s serial number and authentication code, so you may check with manufacturer Dow Filmtec. However, our membranes directly comes from the factory to Amazon FBA without waiting in stock. Usual shelf life is about 3 years when the membrane was kept in good conditions based on manufacturer’s guidelines.

**Q: Can you use apec (flo-700-qc) flow restrictor with this membrane?**
A: Usually 800 flow restrictor is recommended for 100gpd membrane. You may also check with Apec company if that is the manufacturer of your RO system.

**Q: What is the rejection rate in percentage please?**
A: It depends on how new the filter is, type of filtration, and how many filters. I am getting almost 98%

## Frequently Bought Together

- Dow FilmTec, TW30-1812-100HR 100 GPD TFC High Rejection Membrane for Undersink Reverse Osmosis (RO) System
- APEC Water Systems 5-TCR-QC US MADE 10" Inline Carbon Filter with ¼” Quick Connect For Reverse Osmosis Water Filter System (For Standard System)
- APEC Water Systems ULTIMATE Series US Made Stage 1, 2 & 3 Replacement Filter For Undersink System(FILTER-SET)

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**Shop now:** [https://www.desertcart.fi/products/54784417-dow-filmtec-tw30-1812-100hr-100-gpd-tfc-high-rejection](https://www.desertcart.fi/products/54784417-dow-filmtec-tw30-1812-100hr-100-gpd-tfc-high-rejection)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-01*