iSpring Greatwell NSF Certified Reverse Osmosis Membrane 75 GPD 11.75” X 1.75”, Replacement Fits Standard Under Sink RO Drinking Water Filtration System, MC7

Great product(RCC7P-AK), great cusotmer service (special thanks to Nick) for help on fixing my problem. The system runs flaw less once setup is done appropriately. Dont have to do multiple follow ups like other company cusotmer care services.

iSpring provides a quality product, but more than that is their customer service. I had a problem (after 10 years) and Larry at iSpring helped me to work it out. Pointing out what I might need (hadn't changed filters in 10 years) and gave step by step instructions on what I needed to do. System is up and working fine! Ken

Easy install and water taste is good again…. I replaced all filters and didn’t do this one, it was not in my box-kit of replacement filters I ordered…..water didn’t taste right….I didn’t realize it’s KEY for system of purification!!!

I used the 75GPD Reverse Osmosis Membrane on a iSpring RCC7P-AK Boosted Performance Under Sink 6-Stage Reverse Osmosis system that I purchased in 2021. I replaced the RO Membrane after 8 months just to be safe (forever chemicals are a concern!). This said, the prior RO membrane was still performing at a good filtration. 2/19/23 - RO filter change TDS Before change = 56. TDS after change = 20. TDS Tap cold =162. (65% before change, 87.6% filtration after change) 10/8/23 - RO fiter change TDS Before change = 43. TDS after change 38. TDS Tap cold = 297 (85.5% before change, 87% after change) I called Ispring (talked to Sean) to discuss TDS measurement and also to verify that the 6th stage was installed correctly as I recalled that the manual had a picture of it installed backwards (Red Stones are the inlet! which is the LH side for my system see picture above). Sean was super helpful, knowledgeable and friendly. He noted that its really important on 6th stage filters (with Alkaline Remineralization filter) to take the TDS measurement 30 seconds after running the RO faucet. This prevents a false high reading from the remineralization. He said an even better way was to measure the water coming out of the RO tank. This is easy just shut off the cold water inlet to the RO system and then the RO faucet water will be from the RO tank which is just prior to the 6th stage Alkaline Remineralization filter). Note: My feedback was for Ispring to update their instructions. Sean noted that's in work.

Don't waste your money on cheap imitations! I have heavy amounts of minerals in my water. Not quite hard, but way up there. I bought the reverse osmosis system to provide water for my whole house ultrasonic humidifier. It worked great for 2 years, then the water output decreased to the point it was obviously time to change the membrane. I got one of the cheap knock-offs & it was an unmitigated disaster! I replaced the aftermarket membrane with the OEM one & everything was back to normal.

so many filters that needs replacement and this is one of the easier one. Price is decent. Filter will last for many gallons of filtration need

The iSpring 6 Stage RO Water System is an exceptional product that truly delivers on its promises. This water system is designed to provide you with clean, fresh-tasting water that is free of contaminants, and it does so with ease. One great feature of this water system is its alkaline remineralization filter. This unique filter adds back beneficial minerals like calcium and magnesium to your water, which not only helps to balance its pH level but also improves its taste and overall quality. The installation process for the iSpring RCC7AK was also incredibly straightforward. You don't need any special tools or plumbing experience to get it up and running, and the included instructions are clear and easy to follow. Once installed, the system is also low maintenance, with only a few filters that need to be replaced every six to twelve months. The company also has some of the best Customer Support I've encountered for any product. Sean at iSpring truly cares and went over the top in helping solve an issue I encountered after a few years of use.

Awesome flow and still same taste. even thought it is 50% improvement in GPD, real-world application feels like I have double the capacity, as I'm able to fill about twice as much as before.

Excelente producto!! Funciona muy bien!

Muy buena membrana, me dura perfectamente 2 años sin problemas.

très bien RAS

أجود وأضمن من الصيني اللي في السوق ، كنت أطلبه من أمريكا والان متوفر هنا ، نصيحة لا تبخل على نفسك وابحث عن الجودة هذا ماء تشربه 👍😎

No issues with installation into an iSpring under sink system. Simple instructions and should last many more years.