SpectraPure® MPDI System Cartridge High Capacity Replacement Kit



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.

SilicaBuster™ DI Cartridge - Color-Indicating - SuperDI

SpectraPure Super DI Color-Indicating SilicaBuster™ Multi-Layer DI Cartridge - High Capacity 10 inch Shell, 3 inch D x 10 inch L


SpectraPure® SilicaBuster™ Mixed-Bed Multi-Layer Deionization Cartridges are fabricated with semiconductor grade resins for highest possible purity water. They are capable of producing 18 megohm resistivity water. They are the first deionization cartridges designed to reduce silica, nitrates and phosphate levels in the low ppb range. These newly formulated cartridges far exceed the performance of previous cartridges, offering enhanced contaminant removal, longer life and higher purity. And now, Super DI SilicaBuster™ DI Cartridges have even greater capacity than our standard-shell cartridges!

  • Now with 33% more capacity than our standard SilicaBuster™ DI cartridge
  • Color changes to show remaining capacity and cartridge exhaustion
  • For ultra high purity water (18 megohms) resistivity
  • Enhanced silica removal
  • Highest silica, nitrate, phosphate and heavy metal removal of any 10 inch DI cartridge available
  • Optimized for post RO or post distillation filtration
  • Highest capacity of other similar size cartridges
  • Interchangeable with Captive Purity's, Kent Marine's, AWI's, BRS's and most residential/aquarium RO or RO/DI systems and SpectraPure Eliminator Systems

Aluminized Mylar packaging eliminates DI cartridge degradation Note: Deionization cartridge life is greatly reduced when operated on low pH waters, or water with high CO2 (carbon dioxide) levels. Exact cartridge life will vary greatly with pH, carbon dioxide levels and TDS etc., in your RO water or the feed water supplying the RO system. Aeration or degasification of RO product water is recommended for such waters for removal of carbon dioxide.


Customer Reviews

Based on 3 reviews
Gary R Peek

I have made several purchases from SoectraPura and it never fails it is always a Spectacular ease of purchase. I have recommended this company to many of my saltwater tank friends. Their words; Spectacular.

Minh Nguyen
Replacement RODI filters

I have been using spectra pure replacement filters for years, my fish love it and so am I. Always satisfied with the products and highly recommended.

Hello Steven,
Thank you for your review. We are happy you and your fish are satisfied with the filters.

Jeff J
This is amazing

I have used these for 8 months. Tremendous quality, consistent output, great customer service and easy to change out. I’m so glad I got this system.

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