SpectraPure® SpectraSelect® Plus 99% Rejection RO Membrane 90GPD

SKU: MEM-SP-0090


SpectraPure® SpectraSelect® Plus™ 99% Rejection Membranes set the industry standards for contaminate removal, high flow rate, and membrane longevity. Using a proprietary process, SpectraSelect Plus™ membranes are pre-treated to enhance rejection and increase product water production, while effectively doubling post deionizing cartridge life.

SpectraSelect membranes are hand-picked and individually tested for consistent ultra-high rejection ratios.

No other membrane can match SpectraSelect Plus™ for membrane life, or the ability to remove silica, phosphates, nitrates, and heavy metals.

SpectraSelect Plus™ Membranes are standard equipment in SpectraPure MaxCap™-AF & -MF RO/DI Systems, SpectraPure UHE RO/DI Systems, and are now included in SpectraPure’s newly upgraded CSPDI -AF & -MF RO/DI Systems.

They are can be used as an upgrade replacement option for most residential / aquarium Reverse Osmosis or RO/DI Systems and are interchangeable with Captive Purity™, Kent Marine® and other standard-sized TFC membranes.

SpectraPure has been Manufacturing and doing Research & Development in the Water Purification Industry for over 30 years. If there's one thing we know, it's how to produce the PUREST Water every time. That's why the Professionals recommend and use our products in all their installs and maintenance.

Bring our Science and Knowledge home with you! Trust SpectraPure to keep your water Pure!


    • Typical stabilized conductivity rejection 99%, minimum conductivity rejection 98%.
    • Membranes produce rated GPD ± 20% at 60 psi & 77°F (25°C) w/ 250ppm softened water feed & 15% recovery.
    • Maximum temperature 113F (45c)
    • pH range 2-11
    • Free chlorine limits less than 0.1ppm
    • Maximum feed water silt density index (SDI) 5

Note: RO Membranes must be matched with appropriate flow restrictors.
Always change or adjust the flow restrictor when modifying membrane GPD rating on any RO or RO/DI system.

Customer Reviews

Based on 23 reviews

Does just what it is supposed to do, very pleased.

I look to SpectraPure for the best filters made.

I look to SpectraPure for the best filters made available on the market. I've enjoyed quick delivers from them. I will continue to turn to them for the best products and knowledge available in the industry.


Same good quality as always

A+ Company

I’ve been going with Spectrapure for all my RODI needs for 6 years now. Always a pleasure dealing with Daniel and the rest of the crew. They help me acquire the proper tools and equipment for long term success in the aquarium hobby. Thanks again for being there through my saltwater journey.

Perfect zero readings

I have used my RODI water system for a year now and water is just perfect couldn't be more happy.

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