Bulk Reef Supply

BRS 4 Stage Value Replacement Filter Kit


1 x BRS Universal Carbon Block Filter - 1 Micron   + $0.00

1 x 2.5" x 10" - 1 Micron Purtrex Depth Sediment Filter   + $0.00

1 x One Cartridge Refill (1.25 lbs.) DI Resin (Color Changing)   + $0.00

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    Why does BRS recommend this?

    For almost all 4 Stage RODI systems we recommend the BRS 4 Stage Value replacement filter kit. This kit included high quality filter elements including the Purtrex 1 micron sediment filter and BRS Universal Carbon. We would be very wary of using cheap, low quality carbon blocks in a 4 Stage RODI system because they do not last as long and will start to let organics and chlorine though very quickly. The kit also includes Color Changing DI resin which comes in a vacuum sealed Mylar bag for a long shelf life and effectiveness.


    This kit is designed to treat all major water sources including well water and water treated with chloramines or chlorine. The 4 stage Value Replacement Filter Kit has been upgraded with the latest in carbon block technology and the best four stage RO/DI solution to universally treat for chloramines, chlorine and well water. The kit includes the upgraded GE 1 micron Purtrex Depth Sediment Filter, a new 1 Micron BRS Universal Carbon Block and a BRS Color Changing DI Refill. This kit can be used with NEW 4 Stage BRS RO/DI systems as well as legacy systems and all major competitor 4 stage RO/DI systems that use standard 10” filters.

    • Purtrex 1 Micron Sediment Filter
    • BRS Universal 1 Micron Carbon Block
    • 1.25 lb. Color Changing DI Resin Refill


    Recommended Installation

    • Stage One - Purtrex 1 Micron Sediment Filter
    • Stage Two - BRS Universal 1 Micron Carbon Block
    • Last Stage - DI Resin


    Purtrex Sediment Pre-Filter

    Purtrex Depth Sediment Filters are an exceptional value for general applications where long life, high purity and low change-out frequency are required. Produced through GE Osmonics patented melt blown micro fiber technology, Purtrex is a 100% pure polypropylene depth filter with exceptional dirt-holding capacity. Purtrex true-graded density filter matrix (lower density at the surface of the filter with progressively higher density toward the center) captures particles throughout the entire filter depth. This translates to longer life and fewer change-outs than existing string-wound or resin-bonded filters. BRS Color Changing DI Resin is packaged in foil-lined 4mm Mylar bags AND vacuum sealed to preserve maximum useable life.


    Carbon Block

    BRS Universal Carbon Blocks are manufactured using high performance catalytic active carbon combined with a new binder system technology which maximizes the availability of the critical catalytic sites. The combination of advanced carbon technology, increased volume of carbon contained in each filter and proprietary manufacturing processes delivers exceptionally high chloramine, chlorine, VOC and general chemical performance.

    • NSF Certified
    • Specifically formulated for superior Chloramine reduction
    • 1 µm (micron) Nominal Filtration*
    • Chlorine 35,000 @ 1 GPM**
    • Chloramines 3,500 @ 0.5 GPM***
    • High chemical adsorption
    • 30% more carbon than standard blocks****


    Color-Changing DI Resin

    BRS Color Changing Resin is packaged in foil-lined 4mm Mylar bags and vacuum sealed to maintain maximum storage life and effectiveness.

    • Changes Color from Blue to Brown as the media is exhausted.
    • 2 year shelf life (unopened)
    • Total Cation Capacity: 1.9 meq/mL min (Na+ form)
    • Total Anion Capacity: 1.25 meg/mL min (cl+ form)


    *Nominal Micron rating for all above - 1 micron
    **2ppm free chlorine >90% reduction
    ***3ppm monochloramine >85% reduction
    ****Manufacturer's internal test data

    More Information
    Filter Dimensions 10 in. x 2.5 in. (Standard)
    Sediment Filter Type True Gradient Technology
    Micron Rating 1
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    Product Questions

    will this work on a rain soft ultrefiner ll?
    Question by: johnny on Feb 29, 2024, 10:47 AM
    Hey there,
    Thank you for reaching out to us. If those filter takes the standard 2.5" by 10" filters then it should work fine. Please let me know if you need anything further.
    Answer by: Thomas Wofle (BRS Staff) on Mar 1, 2024, 10:28 AM
    This can be used on a BRS 4 stage value plus system from 10 years ago, even though it is labeled “5 micron sediment filter” and “5 micron VOC/chlorine carbon block”? I’m assuming this is just upgraded replacements?
    Question by: Phil on Jan 20, 2024, 5:37 PM
    Hey there,
    Thank you for reaching out to us. Yes, it can be.

    Please let me know if you need anything further and take care!
    Answer by: Matt Lucero (BRS Staff) on Feb 15, 2024, 11:37 AM
    Will this work for a Spectrapure CSPD1 180 MF?
    Question by: Robert Mulkey on Jun 11, 2023, 5:51 PM
    Hey there,
    Thank you for reaching out to us. Yes, it will.

    Please let me know if you need anything further and take care!
    Answer by: Matt Lucero (BRS Staff) on Jun 16, 2023, 9:09 AM
    Will this work in an Aquaticlife 4 stage 100 gpd rodi unit?
    Question by: Michael on Feb 1, 2022, 7:27 PM
    Yes, as long as it is not their Twist In Model.
    Answer by: Matt Lucero (BRS Staff) on Feb 2, 2022, 12:21 PM
    Will this work with Aquaticlife 4 stage rodi model # 540326
    Question by: Michael Yuscavitch on Jan 28, 2022, 2:51 PM
    Yes, they will work in that unit.
    Answer by: Matt Lucero (BRS Staff) on Feb 2, 2022, 2:43 PM