Will this work for the aquatic life buddie?

Yes it is still working well for my aquatic life ro buddie.

Will this work with hydro logic stealth ro200?

Yes,our 100GPD-2012 size membrane is perfectly compatible with Hydro-logic's Stealth 200 Reverse Osmosis System.

Do any of your ro membranes fit the ao smith ao-us-ro-mb-4000

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.

Will this work with an ultima vii system?

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.

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Membrane Solutions Reverse Osmosis 50GPD, RO 50 GPD Water Filter Universal Compatible Replacement RO System, 1-Pack

Membrane Solutions Reverse Osmosis 50GPD, RO 50 GPD Water Filter Universal Compatible Replacement RO System, 1-Pack

Product ID: 274783843

Details

External testing certification
NSF
Item weight
204 g
Material
Polyamide
Product benefits
Provides water
Product dimensions
18D x 18W x

💧50 GPD high flow rate

🔧Universal 1812 size fit

🛡️97% salt rejection purity

44239CFA

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Description

💧 Elevate your water game with premium purity and universal fit — don’t settle for less!

FITS LIKE A GLOVE - Universal 11.75 x 1.75-inch size fits most residential RO systems seamlessly.
EXPERT SUPPORT ALWAYS ON - American-based customer service ready to assist you anytime.
BUILT TO LAST DRINK TO TRUST - Durable TFC membrane with 24-36 months lifespan under normal conditions.
PURE HYDRATION NO COMPROMISE - Removes 97%+ of salts & contaminants for crystal-clear water.
CERTIFIED SAFETY GUARANTEED PEACE - NSF/ANSI 58 tested for food-grade, safe drinking water you can count on.

The Membrane Solutions 50GPD Reverse Osmosis Membrane delivers a powerful 50 gallons per day flow with a 97% salt rejection rate, using a 100% food-grade Thin Film Composite material. Designed to fit standard 1812 RO housings, it ensures broad compatibility with leading brands. Certified to NSF/ANSI 58 standards, this membrane guarantees safe, clean drinking water by filtering out heavy metals, organic materials, and over 99% of impurities. With a lifespan of up to 3 years and backed by dedicated American customer support, it’s the smart upgrade for any residential RO system.

Specifications

ASIN	B06XC9BVVC
Best Sellers Rank	#80,190 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #277 in Replacement Water Filters
Brand	Membrane Solutions
Brand Name	Membrane Solutions
Compatible Water Purifier Models	APEC Water Systems ROES-50
Customer Reviews	4.6 out of 5 stars 2,911 Reviews
EU Spare Part Availability Duration	2 Years
External Testing Certification	NSF
External testing certification	NSF
Global Trade Identification Number	00850071881820
Item Dimensions D x W x H	18D x 18W x 118H millimeters
Item Weight	0.45 Pounds
Item weight	0.45 Pounds
Manufacturer	Membrane Solutions
Manufacturer Part Number	MSRS001
Material	Polyamide Thin-Film Composite
Material Type	Polyamide Thin-Film Composite
Model Number	ROULP-1812-50
Number of Items	1
Product Benefits	Removes up to 97% of impurities and contaminants, with easy installation for user convenience.
Product dimensions	18D x 18W x 118H millimeters
Set Name	Single
UPC	850071881820
Unit Count	1.0 Count

Reviews

R**N

Good product, great price

Works well

9.11.2025

M**N

Good R/O Membrane Replacement

Fits and works as expected.

11.03.2025

R**I

المنتج 50 جالون ماينفع

الفلتر كفو وجودة ممتازة بس 50 جالون لا انصحك فيه خذ نفس المنتج بس 75 جالون افضل من هذا

6.11.2022

M**K

Improved taste of water significantly

Seems to be working well, only been running it for 1 month. Haven’t bothered testing the water yet.

26.01.2021

F**D

RO membrane cartridge.

Perfect fit for my RO BUDDIE. Easy to install. Output RO water PPM is around 4 to 5 ppm. Great way to rejuvenate my RO system. Great value.

27.04.2026

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44239CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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