iSpring Greatwell membrane assembly filtration core for purer drinking water at home.
iSpring Greatwell under-sink housing-fit demonstrates compatibility with standard RO systems for easy replacement.
iSpring Greatwell 11.75 x 1.75 inch membrane label showing standard housing size.
iSpring Greatwell packaging image with warranty badge and support messaging.
iSpring Greatwell water droplets concept illustrating purified water after filtration.
iSpring Greatwell installation guide page showing quick setup steps.
iSpring Greatwell third-party testing seal highlighting NSF/ANSI verification.
iSpring Greatwell maintenance tips page illustrating long-term care for membrane performance.

iSpring

iSpring Greatwell RO Membrane MC1 – 100 GPD, 11.75 x 1.75 in Replacement for Standard Under-Sink RO

High-performance tools and home improvement made for confident daily results

$59.99

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Why customers choose TaskHolt Tools

Overview

The iSpring Greatwell membrane MC1 is a high capacity replacement element designed for standard under-sink RO systems. Built to work with your existing filtration setup, it helps you achieve clearer, better tasting water on demand.

How it works

This membrane features a 0.0001 micron barrier and a high packing density. In testing conditions it delivers strong TDS rejection while allowing water molecules to pass through. Expect robust performance across typical household usage.

  • Removes up to 99% of more than 1,000 contaminants such as lead, chlorine, fluoride, arsenic, asbestos, calcium and sodium
  • Lead reduction up to 98% in many configurations, with consistent filtration under standard conditions
  • 0.0001 micron size permits water molecules through while filtering out dissolved solids
  • TDS rejection rate up to 97% under NSF58 test conditions

Size and compatibility

With a standard 11.75 inch length and 1.75 inch diameter, this membrane fits many under sink housings and is designed to work with typical 75 GPD systems. It is a practical replacement for MC1 compatibility.

  • Standard size that fits most under sink RO membrane housings
  • Expected output of about 75 gallons per day, suitable for households of various sizes
  • Easy online registration for manufacturer warranty and lifetime tech support

Quality and service

Independent third party testing supports NSF ANSI standards for quality and safety. The membrane uses food grade materials and a design that minimizes waste while providing a high packing density.

Care and lifespan

Expect the membrane to last approximately 2 to 3 years depending on water quality. If your source water is very hard, with high total dissolved solids, contact us for tailored options.

Customer support

Register online to activate a manufacturer warranty and access lifetime free technical support. If you run into an issue, reach out and we will help you troubleshoot.

FAQ

Q: Is the iSpring Greatwell membrane compatible with standard under-sink RO systems?

A: Yes, it fits most standard under-sink RO housings and is designed for easy replacement.

Q: What performance can I expect from this membrane?

A: Up to 99% removal of common contaminants is possible under typical use, depending on water quality.

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