What is the difference between the mc7 and mc1? i have an rcc7 unit that i purchased 2 years ago

Hi Gregory, the the difference between the two membranes is the gallons per day produced; the MC1 will fill the ro storage tank a just a couple minutes quicker than the MC7. Either membrane is compatible with the RCC7.

When should this be changed?

It should last 2 to 3 years. However, I use a TDS meter to monitor pollutant levels. The water in Alpine, TX is not very good according to the TDS readings. I change my RO membrane twice a year and the other filters about every 3 months. I am probably a bit of a fanatic though. Check out 123filter.com for filter information. I stopped buying from Amazon because I got a better price and their customer service is awesome. Amazon customer service is excellent but 123filter is in the RO business. Very helpful for problem solving.

Are there any specific instructions? Do you have to run water through it awhile before using?

There will be specific instructions but in any case it is always a good idea to flush the system few a few minutes before using. The important thing is to keep the membrane wet. Tech support at isptings is awesome too.

Will this fit ispring rcc7ak?

Hi Elizabeth, Thank you for your question. Yes, this is the membrane filter used in the system rcc7ak. Thanks, iSpring Water Systems

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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

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

Product ID: 3671861

Details

External Testing Certification
NSF
Item Weight
0.42 Pounds
Material
Polypropylene
Product Dimensions
1.75"D x x

💧75 GPD water output

🔬0.0001 micron filtration

🛡️NSF/ANSI certified safety

R1415

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Description

💧 Elevate your hydration game with NSF-certified purity!

LIFETIME SUPPORT - Register for warranty and enjoy lifetime free tech support—because clean water is serious business.
FITS LIKE A GLOVE - Standard 11.75” x 1.75” size fits most under-sink RO systems for seamless replacement.
CERTIFIED CONFIDENCE - NSF/ANSI tested and approved to meet the highest industry standards for your peace of mind.
POWERFUL PERFORMANCE - Delivers up to 75 gallons of purified water daily—enough for your entire household’s hydration needs.
PURE WATER ZERO COMPROMISE - Removes 99%+ of 1,000+ contaminants including lead, chlorine, and fluoride for crystal-clear hydration.

The iSpring Greatwell MC7 Reverse Osmosis Membrane is a high-capacity, NSF/ANSI certified filter that removes over 99% of contaminants including lead and chlorine. Sized at 11.75” x 1.75”, it fits standard under-sink RO systems and produces up to 75 gallons of clean water daily. Backed by lifetime tech support and a manufacturer warranty, it ensures reliable, safe drinking water for modern households.

Specifications

ASIN	B007TBB69W
Best Sellers Rank	#4,558 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #87 in Water Filtration & Softeners #96 in Water Coolers & Filters
Brand Name	iSpring
Customer Reviews	4.7 4.7 out of 5 stars (2,204)
EU Spare Part Availability Duration	3 Years
External Testing Certification	NSF
Global Trade Identification Number	00662425048120
Included Components	RO membrane
Item Dimensions D x W x H	1.75"D x 1.75"W x 11.75"H
Item Type Name	, 75 GPD, 11.75” X 1.75”
Item Weight	0.42 Pounds
Manufacturer	iSpring
Manufacturer Part Number	MC7
Material Type	Polypropylene (PP)
Model Number	MC7
Number of Items	1
Product Benefits	Removes up to 99% of over 1,000 contaminants including lead, chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more
Set Name	75 GPD
UPC	662425048120
Unit Count	1.0 Count

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R1415

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In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

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