BRS 4 Stage Value Replacement Filter Kit

BRS 4 Stage Value Replacement Filter Kit
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  • BRS 4 Stage Value Replacement Filter Kit

BRS 4 Stage Value Replacement Filter Kit

93% Recommend this to a friend (37 of 40)

SKU: 208829
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Quick Overview

Why does BRS recommend this?

For almost all 4 Stage RODI systems we recommend the BRS 4 Stage Value replacement filter kit.  With the Purtrex 1 micron sediment filter and a BRS Universal Carbon block the kit comes with high quality filters.  We would be very weary 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. Will work with all 4 stage RO/DI systems including the BRS 4 Stage Value Systems and any competitor systems that use industry standard 10” filters

  • Purtrex 1 Micron Sediment Filter

  • BRS Universal 1 Micron Carbon Block

  • 1.25 lb. Color Changing DI Resin Refill


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Product Questions

Will these replacements fit RO Buddie systems?
Question by: John Howe on Apr 9, 2016 10:46:00 AM
Great question!
These are standard 10" x 2.5" cartridges and certainly should work for most systems as long as the measurements line up. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 12, 2016 5:35:00 PM
I can't find my filter specs, will this work with the Coralife Pure-Flo II (76002)?
Question by: Dave on Jun 2, 2015 12:02:00 PM
great question,
Most Ro units are a fairly standard size, this kit should fit in your canisters no problem. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jun 2, 2015 4:25:00 PM
About how often do you need to change the filters? I assume it would be dependent on the aquarium but I'm looking to purchase a couple replacements for the year for my classroom.
Question by: Madelaine on Mar 29, 2016 9:13:00 PM
Great question!
The actual time will vary on water quality, PSI and other factors. Typically the Sediment, Carbon block and DI resin will last around 6 months (the DI can often last less) and the RO membrane will last around 2 years. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Apr 1, 2016 8:59:00 AM
I have an R/O system I haven't used in years. I'm looking at your 4 stage replacement kit. My unit has 3 canisters and a white horizontal cylinder on top. Does the top horizontal piece also need replaced and what does it do?
Question by: Eric Richard on Jan 17, 2016 1:43:00 PM
Great question!
If the unit has been stored all filters will need to be replaced. the 4 stage kit will be perfect! The final filter is the RO membrane which is the main component of filtration. I have included a link to the standard 75 GPD (Gallon per Day) membrane below.
Answer by: Connor (Admin) on Jan 26, 2016 6:37:00 PM

Full Details

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.


Recommended Installation for this package:

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


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****


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.  


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



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  • brs 4 stage is the best By lisa on 10/7/2016

    great deal for the price works good
  • Quality product By lisa on 9/22/2016

    This is the best deal out there for a quality filter. I'm very happy with them will not shop any where else
    better than any deal on ebay.
  • Works Great! By RP on 9/9/2016

    Great replacement filter kit for my BRS 4 stage ro/di system! Definitely will buy this again in the future!
  • Qaulity By Redneck reefer on 9/9/2016

    I have been using the replacement kits in my rodi for years because they offer the best qaulity filters I've found and the water quality u start with on your reef tank I one of the key things that determines the qaulity of the tank
  • works well and a good value By Trailjammer on 9/7/2016

    I bought this kit to change out my filters on my RODI unit. Works great and seems like a good value. My TDS is now back down to 0.
  • Works as intended By Nate on 8/30/2016

    Swapped out my filters last night and I'm back to 0 TDS.
  • Excellent product By David on 8/19/2016

    I have used this filter for a number of years and liked it so much I bought the 5 stage drinking water for work. Several of my colleagues have now purchased similar units from BRS. Great product, great company.
  • So convenient By MaLi on 8/14/2016

    The kit makes it so easy to change out the filters as needed! BRS also supplies great tutorials to make it even easier.
  • replacement filter kit By Chuck on 8/5/2016

    When I purchased this RO/DI unit the filters were in bad shape, all it took was a replcement kit for the filters to have it working like new. The unit is pretty old but still works GREAT.
  • good By Kevin on 6/12/2016

    very good product
  • Good Value By pHIL on 6/1/2016

    I generally order this kit every three months for my 30 and 40 fish tanks as well as for drinking water.
    As soon as my output meter gives me a reading of 1 , I replace all three. For this price why not be cautious.
  • Great Value By Joe on 5/2/2016

    Great Value and easy to change all stages.