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 75 GPD RO Membrane, Reverse Osmosis Membrane Element 11.75" x 1.75" Water Filter Replacement for Undersink Home Drinking RO Water Filtration System

Product ID: 44762706

Details

External Testing Certification
NSF
Item Weight
6.4 Ounces
Material
Polyamide
Product Dimensions
1.75"D x x

💧75 GPD high flow rate

⚙️Universal 11.75" x 1.75" size

🛡️97% salt rejection efficiency

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Description

💧 Elevate your hydration with the membrane that means business.

EFFORTLESS COMPATIBILITY - Fits seamlessly into most standard undersink RO systems with industry-standard dimensions—upgrade without hassle.
LONG LASTING RELIABILITY - Enjoy up to 36 months of premium filtration, backed by NSF/ANSI 58 certification and rigorous third-party testing.
NEXT LEVEL WATER QUALITY - Reduces heavy metals, nitrates, and organic contaminants to protect your health and elevate your hydration game.
SUPPORT THAT STANDS BY YOU - American-based expert assistance ensures your RO system runs flawlessly—welcome to the Membrane Solutions family.
PURE PERFORMANCE EVERY DROP - Advanced Thin Film Composite membrane slashes impurities by 99%, delivering crystal-clear, safe drinking water.

The Membrane Solutions 75 GPD RO Membrane is a premium reverse osmosis filter element crafted from 100% food-grade Thin Film Composite material. It delivers a high 97% salt rejection rate and reduces over 99% of impurities including heavy metals and harmful minerals. Designed to fit standard 11.75" x 1.75" RO housings, it offers compatibility with leading brands and a lifespan of 24-36 months. Certified to NSF/ANSI 58 standards and supported by dedicated American customer service, it ensures safe, clean drinking water with effortless installation and reliable performance.

Specifications

ASIN	B0719H4BVL
Best Sellers Rank	#11,062 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #83 in Replacement Under-Sink Water Filters
Brand Name	Membrane Solutions
Compatible Water Purifier Models	APEC Water Systems ROES-50, APEC Water Systems ROES-PH75
Customer Reviews	4.6 4.6 out of 5 stars (3,205)
EU Spare Part Availability Duration	2 Years
External Testing Certification	NSF
Global Trade Identification Number	00850071881837
Item Dimensions D x W x H	1.75"D x 1.75"W x 11.75"H
Item Weight	6.4 Ounces
Manufacturer	Membrane Solutions Corp
Manufacturer Part Number	43235-33608
Material Type	Polyamide Thin-Film Composite
Model Number	WS02
Number of Items	1
Product Benefits	Provides safe-clean drinking water by reducing hundreds of impurities including heavy metals, organic materials, and harmful minerals
Set Name	75GPD
UPC	850071881837
Unit Count	1.0 Count

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