---
product_id: 7899849
title: "Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane"
brand: "dow filmtec"
price: "2676 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Dow Filmtec"
url: https://www.desertcart.ro/products/7899849-dow-filmtec-sw30-2540-seawater-reverse-osmosis-membrane
store_origin: RO
region: Romania
---

# Highest flow rates for seawater desalination Operates at lower pressure to reduce pump size Precision automated membrane fabrication Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane

**Brand:** dow filmtec
**Price:** 2676 Lei
**Availability:** ✅ In Stock

## Summary

> 💧 Power your desalination with precision and efficiency — don’t get left behind!

## Quick Answers

- **What is this?** Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane by dow filmtec
- **How much does it cost?** 2676 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/7899849-dow-filmtec-sw30-2540-seawater-reverse-osmosis-membrane)

## 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

- • **Robust Salt Rejection:** Maintain crystal-clear, purified water with superior salt removal that professionals trust.
- • **Energy-Smart Operation:** Lower operating pressure means smaller pumps and reduced energy costs—smart for your budget and the planet.
- • **Unmatched Flow Efficiency:** Experience industry-leading water throughput that keeps up with your toughest desalination demands.
- • **Certified Quality Assurance:** NSF-certified for peace of mind and guaranteed compliance with industry standards.
- • **Precision Engineered Consistency:** Automated fabrication ensures every membrane delivers reliable, repeatable performance—no surprises.

## Overview

The Dow Filmtec SW30-2540 is a high-performance seawater reverse osmosis membrane designed for maximum flow rates and consistent salt rejection. Its advanced polyamide thin-film composite membrane is precision-fabricated for reliable operation at lower pressures, reducing pump size and energy consumption. Certified by NSF, it supports professional-grade desalination with a maximum pressure drop of 15 psig and free chlorine tolerance below 0.1 ppm, making it a top choice for both land and sea-based water purification systems.

## Description

Product Description The Dow Filmtec SW30-2540 reverse osmosis membrane offers high productivity and maintain excellent salt rejection. This membrane can be operated at a lower pressure to reduce pump size and cost. From the Manufacturer The Dow Filmtec SW30-2540 reverse osmosis membrane offers high productivity and maintain excellent salt rejection. This membrane can be operated at a lower pressure to reduce pump size and cost.

Review: Ensure you lube the O rings first before attempting to put the replacement in. - Great Product
Review: Dow Filmtec suck - Returned 1 because the package wasn't sealed correctly. I Installed the other and like my other Dow Filmtec membranes I bought the previous year, this one just failed again. This is the 2nd time I have been burned by Dow Filmtec membranes. I will never buy these membranes again, they used to be good but I heard they changed manufacturers a couple years ago. My original membranes lasted 5yrs and still worked better, I wish I never replaced them!

## Features

- Features highest flow rates available to meet the water demands of both land and sea based desalinates
- Improved membrane design and automated, precision element fabrication result in the most consistent product performance available
- Maximum Pressure Drop: 15 psig
- Free Chlorine Tolerance: <0.1 ppm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00D43H5TO |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #335,170 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,217 in Replacement Under-Sink Water Filters |
| Brand | Dow Filmtec |
| Color | Yellow |
| Customer Reviews | 3.8 3.8 out of 5 stars (60) |
| Date First Available | November 10, 2009 |
| External Testing Certification | NSF |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4 pounds |
| Item model number | FILMTEC-SW30-2540 |
| Manufacturer | Dow Filmtec |
| Material | Polyamide Thin-Film Composite |
| Number of Items | 1 |
| Part Number | SW30-2540 |
| Product Benefits | High productivity with consistent performance and low pressure drop for effective seawater desalination |
| Product Dimensions | 40 x 2.5 x 2.5 inches |
| Set Name | Undersink Water Filtration System |
| Size | 1 Count (Pack of 1) |
| Temperature Range | 113 Degrees Fahrenheit |
| UPC | 701003117879 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Dow Filmtec
- **External Testing Certification:** NSF
- **Item Weight:** 4 Pounds
- **Material:** Polyamide Thin-Film Composite

## Images

![Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane - Image 1](https://m.media-amazon.com/images/I/61ozE-oWp5L.jpg)
![Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane - Image 2](https://m.media-amazon.com/images/I/61abB-dW-zL.jpg)

## Questions & Answers

**Q: My membrane has a rubber o ring on both sides will this still work which side should I put the intake**
A: This particular Filmtex SW30 2540 membrane has one rubber o-ring at one end. This o- ring has to go on the upstream side of its housing unit.

**Q: Does it work in idromar mini compact?**
A: Yes, this membrane should work.  If you check page 4 of your product manual, you will see it listed under replacement parts.  That is this model.

**Q: What is the gph rating?  what is the pressure required for this membrane?  does it need a casing?**
A: stone age needs to go DOW form 609-00377-0811available on website which provides the information requested. (Gph is gallons per hour)  the form referenced previously indicates 700 gallon per day at 800 psig at 77 degrees F. A correctly designed casing is required. regards da vinci

**Q: Are the o-rings included?**
A: Should be !

## Customer Reviews

### ⭐⭐⭐⭐⭐ Ensure you lube the O rings first before attempting to put the replacement in.
*by A***R on July 14, 2025*

Great Product

### ⭐ Dow Filmtec suck
*by S***Y on October 26, 2025*

Returned 1 because the package wasn't sealed correctly. I Installed the other and like my other Dow Filmtec membranes I bought the previous year, this one just failed again. This is the 2nd time I have been burned by Dow Filmtec membranes. I will never buy these membranes again, they used to be good but I heard they changed manufacturers a couple years ago. My original membranes lasted 5yrs and still worked better, I wish I never replaced them!

### ⭐⭐⭐⭐⭐ Perfect
*by B***Y on April 3, 2013*

We purchased two of these for use in our home made watermaker on our boat. The membranes are performing perfectly so far and we make tons of delicious drinking water from the sea. We run two in series and we make about 40+ gallons per hour of drinking water. They come sealed in plastic sleeves with a preservative so you don't need to use them as soon as you get them. Very happy with this purchase.

## Frequently Bought Together

- Dow Filmtec SW30-2540 Seawater Reverse Osmosis Membrane
- KEZE Waterproof Food Grade Silicone Lubricant Plumbers Grease for Valve Sealant Faucet O Rings 1 oz 1-Pack

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-14*