--- product_id: 66194658 title: "FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75)" brand: "dow filmtec" price: "263.51 DT" currency: TND in_stock: true reviews_count: 8 category: "Dow Filmtec" url: https://www.desertcart.tn/products/66194658-filmtec-bw60-1812-75-75-gpd-tfc-membrane-for-undersink store_origin: TN region: Tunisia --- # 75 GPD capacity Fits standard 1.8"x12" housings 98% salt rejection FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75) **Brand:** dow filmtec **Price:** 263.51 DT **Availability:** ✅ In Stock ## Summary > 💧 Upgrade your hydration game with the membrane trusted by pros! ## Quick Answers - **What is this?** FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75) by dow filmtec - **How much does it cost?** 263.51 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/66194658-filmtec-bw60-1812-75-75-gpd-tfc-membrane-for-undersink) ## 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 - • **Eco-Smart Performance:** Delivers 20% more purified water at a lower 50 psi pressure—efficient and cost-saving. - • **Seamless Compatibility:** Fits all standard 1.8" x 12" RO housings for effortless upgrades. - • **Ultra-Efficient 75 GPD Output:** Purify up to 7.9 liters per hour—never run low on crystal-clear water. - • **NSF/ANSI Standard 58 Certified:** Backed by trusted certification for your peace of mind and safety. - • **Industry-Leading 98% Salt Rejection:** Enjoy cleaner, healthier water with top-tier contaminant removal. ## Overview The FilmTec BW60-1812-75 is a premium Thin-Film Composite reverse osmosis membrane designed for under-sink RO systems. Delivering 75 gallons per day with 98% stabilized salt rejection, it fits standard 1.8" x 12" housings and is NSF/ANSI Standard 58 certified. Engineered for superior efficiency, it purifies 20% more water at a lower pressure, making it the go-to choice for reliable, high-quality home water filtration. ## Description Product Description Dow Filmtec TW30-1812-75 RO Reverse Osmosis Membrane This membrane is rated at 75 Gallons per Day. If you have chlorinated water, we recommend you use a Carbon/Sediment Pre Filter. The residual chlorine in municipal or city water will destroy the Thin Film Composite (TFC) membrane. Dow Filmtec TW30-1812-75 Reverse Osmosis Membrane elements are for home drinking water. The industry's most reliable advanced membrane technology and automated fabrication, allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers and residential customers can rely on. This membrane fits in standard 1. 8" x 12" residential RO membrane housings. The industry's most reliable for home drinking water is the Filmtec reverse osmosis membrane elements. Advanced membrane technology and automated fabrication in the Filmtec reverse osmosis membrane allow these elements to deliver consistent performance for all customers. Filmtec reverse osmosis membrane TW30-1812-75 element is NSF/ANSI Standard 58 listed. Filmtec home drinking water elements are rated at 50 psi and will purify about 20% more water than competitive elements rated at 60 psi. Because of environmental factors actual production may vary. ** please note, The original part number from manufacturer is the TW30, but may be listed at BW60 but they are both the same and fit and work the same. Our part number is MB-1812-75F From the Manufacturer Dow Filmtec TW30-1812-75 RO Reverse Osmosis Membrane This membrane is rated at 75 Gallons per Day. If you have chlorinated water, we recommend you use a Carbon / Sediment Pre Filter. The residual chlorine in municipal or city water will destroy the Thin Film Composite (TFC) membrane. Dow Filmtec TW30-1812-75 Reverse Osmosis Membrane elements are for home drinking water. The industry's most reliable advanced membrane technology and automated fabrication, allow these elements to deliver consistent performance that equipment suppliers, water treatment dealers and residential customers can rely on. This membrane fits in standard 1.8" x 12" residential RO membrane housings. The industry's most reliable for home drinking water is the Filmtec reverse osmosis membrane elements. Advanced membrane technology and automated fabrication in the Filmtec reverse osmosis membrane allow these elements to deliver consistent performance for all customers. Filmtec reverse osmosis membrane TW30-1812-75 element is NSF/ANSI Standard 58 listed. Filmtec home drinking water elements are rated at 50 psi and will purify about 20% more water than competitive elements rated at 60 psi. Because of environmental factors actual production may vary. Review: Satisfy! - Good product. very efficiency and fast too! Review: Saved money. Works well. - RO company wanted over $135.00 for a new RO assembly. This one fit in the housing and works great. Saving a Benjamin on this replacement is awesome. Note, I did verify the flow restrictor and check valve were good. ## Features - Polyamide Thin-Film Composite - 75 Gallon Per Day (7. 9 Liters per Hour) Capacity - 98% Stabilized Salt Rejection (Minimum Rejection 96%) - NSF/ANSI Standard 58 listed - Membrane Dimensions: 11. 75" Overall Length, 1. 75" Diameter (Fits Standard 2" ID Membrane Housings) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B079VPWRBP | | Best Sellers Rank | #69,364 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #459 in Replacement Under-Sink Water Filters | | Brand | Dow Filmtec | | Brand Name | Dow Filmtec | | Customer Reviews | 4.5 out of 5 stars 535 Reviews | | External Testing Certification | ANSI, NSF | | Global Trade Identification Number | 00826333000063, 07898962510407 | | Included Components | New membrane | | Item Dimensions D x W x H | 1.75"D x 11.74"W x 1.75"H | | Item Type Name | Filmtec membrane | | Item Weight | 6.4 ounces | | Manufacturer | Filmtec | | Manufacturer Part Number | TW30181275 | | Material | Carbon | | Material Type | Carbon | | Model Number | TW30 | | Number of Items | 1 | | Product Benefits | Removes Impurities | | Product Dimensions | 1.75"D x 11.74"W x 1.75"H | | Set Name | 75 GPD | | UPC | 826333000063 | | Unit Count | 1 Count | ## Product Details - **External Testing Certification:** ANSI, NSF - **Item Weight:** 0.4 Pounds - **Material:** Carbon - **Product Benefits:** Removes Impurities - **Product Dimensions:** 1.75"D x 11.74"W x 1.75"H ## Images ![FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75) - Image 1](https://m.media-amazon.com/images/I/41A4fOpDQML.jpg) ## Questions & Answers **Q: Why did my tds go from 0 to 2. I flushed for 2 hours tds started at 1 then went to 2. With my old 3 year old filter I was at 0 tds** A: There might be different reasons causing this problem. It is better to empty the tank 2-3 times after changing filters. You may also replace other filters and sanitize the system if you need to. You may check online about how to sanitize your water filter system. Please remove all the filters from the system before you start to sanitation procedure. If these don’t solve the problem, you may contact with Amazon customer service to return the item. **Q: Is this Filmtec membrane made by Dow or Dupont?** A: DuPont merged with FilmTec company and became a part of Dow FilmTec. Eventually, they will produce all the Residential FilmTec Membranes, and we started selling them too. **Q: is this made in usa? I see another listing with the same numbers on it that says "residential" and it says imported.. Its Dow and numbers are the same** A: i be leave if it says imported , its still an American product that's just assembled in another country. Dont worry they work real good ,Total TDS 000. **Q: does this fit the 10"x2.5" canisters** A: The housing size for this membrane is approximately 12.5” x 2.5”. If your housing size is 10 inch, this membrane can’t fit in because the membrane itself measures as 11-3/4” x 1-3/4”. However, if you are replacing the same brand (Dow Filmtec) undersink RO membrane, there won’t be a problem. You may also check with your RO manufacturer. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Satisfy! *by V***J on May 31, 2026* Good product. very efficiency and fast too! ### ⭐⭐⭐⭐⭐ Saved money. Works well. *by T***M on October 25, 2025* RO company wanted over $135.00 for a new RO assembly. This one fit in the housing and works great. Saving a Benjamin on this replacement is awesome. Note, I did verify the flow restrictor and check valve were good. ### ⭐⭐⭐⭐⭐ Dow/Filmtec makes one of the best RO Membranes in the business. I have 0 TDS water *by M***N on January 4, 2020* *I have been using Dow/Filmtec RO Membranes for a decade.* There has not been any changes in the quality of this product during that time. My tap water is 184 TDS post RO filter and 0 TDS after filtration and I've included photos with a TDS meter. I see a lot of negative reviews on a good product and I'll try to clear up some of the misconceptions with my review. First - Dow/Filmtec is known for making one of the best RO membranes in the business hands down. There is only one other more expensive brand I can name that some claim is slightly better but it will produce water even slower which is upsetting many reviewers here. If your goal is to produce the purist R/O water possible which is 0 TDS you can't go wrong with this membrane. I recently ordered a replacement filter after a few years of use and I'm producing water with 0 TDS which is 0 total dissolved solids. I'll now try to clear up the misconceptions. The rejection rate is around 98% which is SLOW and you want SLOW the higher the rejection rate the more efficient the filter is and the more money you'll save and I'm about to explain why. The higher the rejection rate the longer your DI resin filter will last. Water flows through this RO Membrane and into your DI resign which is the finale filter that works the hardest and is the last line of defense against dissolved solids in your water column and if your filter is setup properly will bring your TDS down to 0. You want the rejection rate high so the least amount of solids make it into your DI resign which is the most costly filter to maintain and that processes of rejecting contaminants in the water at a 98% rejection rate causes the water to be made slowly. The Next big misconception is not realizing the filters before your membrane are the biggest factor in how long not only this RO membrane will last but any of them will. R/O membranes have a chlorine tolerance of >0.1 ppm. If any chlorine manages to pass through your carbon filters because their exhausted or low quality and reach the membrane it is instantly ruined and you can throw the membrane in the trash. That is why the pre carbon filters must be kept in working order. I use this membrane to make water for my reef systems and I have a large reservoir to hold the water. The output is as stated around 75 gallons over a 24 hour period. If you live an area with extremely high TDS the process will be even slower because your filters need to work harder and also won't last as long. Keep in mind some cities have been adding chloramine to tap water for a secondary disinfectant which is ammonia based without residents knowing. You will need a different carbon filter in your water filtration system to remove it. Check with your city if you can't seem to get your water filtering correctly and ask. *If you did find this review helpful please leave a helpful up vote. Quality reviews with factual information take a long time to write and I do it to help the community.* Thank You 5 Star Product -Thumbs Up! ## Frequently Bought Together - FilmTec, BW60-1812-75 75 gpd TFC Membrane for Undersink Reverse Osmosis (RO) System (Replaces Model TW30-1812-75) - Home Master ISetTMA8 Artesian And HydroGardener Replacement Water Filter Change Set, White - Home Master ISet-TMHP-MY12 HydroPerfection Replacement Filter Change Set, white --- ## 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.tn/products/66194658-filmtec-bw60-1812-75-75-gpd-tfc-membrane-for-undersink](https://www.desertcart.tn/products/66194658-filmtec-bw60-1812-75-75-gpd-tfc-membrane-for-undersink) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-02*