CQ-BR Iron and Manganese Remvoing Media

Crystal Quest Iron and Manganese Water Filtration Systems contain the Iron and Manganese removing medial CQ-BR®. CQ-BR® is an efficient and economical media for the reduction of dissolved iron and manganese compounds from water. It may be used in either gravity fed or pressurized water treatment systems. CQ-BR® acts as an insoluble catalyst to enhance the reaction between dissolved oxygen (D.O.) and the iron compounds. In ground waters, the dissolved iron is usually in the ferrous bicarbonate state due to the excess of free carbon dioxide and is not filterable. CQ-BR®, acting as a catalyst between the oxygen and the soluble iron compounds, enhances the oxidation reaction of Fe++ to Fe+++ and produces ferric hydroxide which precipitates and may be easily filtered. The physical characteristics of CQ-BR® provide an excellent filter media which is easily cleaned by backwashing to remove the precipitant. CQ-BR® is not consumed in the iron removal operation and therefore offers a tremendous economic advantage over many other iron removal methods.

Other advantages of CQ-BR® include; long material life with relatively low attrition loss, a wide temperature performance range and extremely high removal efficiency. Negligible labor costs are involved because CQ-BR® does not require chemicals for regeneration, only periodic backwashing is required. When using CQ-BR® for iron removal, it is necessary that the water contains: no oil or hydrogen sulfide; organic matter not to exceed 4-5 ppm; the D.O. content equal at least 15% of the iron content with a pH of 6.8 or more. If the influent water has a pH of less that 6.8, neutralizing additives such as CQ-CO®, CQ-Ca® or soda ash may be used prior to the CQ-BR® filter to raise the pH. A water having a low D.O. level may be pretreated by aeration. Chlorination greatly reduces CQ-BR®’s activity. High concentrations of chlorine compounds may deplete the catalytic coating. CQ-BR® is furnished in two grades, regular and fine. Regular is generally recommended for industrial, municipal and most domestic installations. Fine is recommended on domestic installations where backwash rates are limited. Clack CQ-BR® may also be used for manganese reduction with the same dependability as iron removal. In these applications, the water to be treated should have a pH of 8.0-9.0 for best results. If the water also contains iron, the pH should be below 8.5. High pH conditions may cause the formulation of colloidal iron which is very difficult to filter out. All other conditions remain the same for either manganese or iron removal.


  • the proper conditions, no chemicals to purchase for maintenance. Regeneration not required.
  • Iron removal efficiency is extremely high.
  • Negligible labor cost: only periodic backwashing required.
  • Durable material with a long life and wide temperature range.
  • Weighs only 44-50lbs./cu. ft.


  • Density: 44-50 lbs./ cu. ft.
  • Mesh Size: 10 x 40
  • Specific Gravity: 2.0 gm/cc
  • Effective Size: 0.48 mm
  • Uniformity Coefficient: 2.71
  • Color: Black


  • Alkalinity should be greater than two times the combined sulfate and chloride concentration.
  • Water pH range: 6.8-9.0
  • Dissolved Oxygen (D.O.) content must be equal to at least 15% of the iron (or iron and manganese) content.
  • Bed depth: 30-36 in.
  • Freeboard: 50% of bed depth (min.)
  • Backwash Bed Expansion: 20-40% of bed depth
  • Free chlorine concentration less than 0.5 ppm
  • Hydrogen Sulfide should be removed prior to the CQ-BR® filter
  • Service flow rate: 6 gpm
  • Backwash rate: 6 gpm


    • Service Flow Rate: Service flow rate is the maximum gallons per minute recommended for obtaining excellent water quality. Exceeding the service flow rate will cause a reduction in the product water quality.

    • Backwash Flow Rate: Backwash flow rate is the minimum gallons per minute recommended for proper reclassification of the media or resin. Insufficient backwash flow rate will cause inadequate media or resin reclassification and, over time, may reduce its effectiveness.

    • Calculating Your Flow Rate: You will need a watch with a second hand and a 1 or 5 gallon container to measure your flow rate with the instructions below.

      • Using the bathtub as the measuring point, open BOTH the hot and cold water faucets completely (If you have a well water supply, wait until the pump kicks on before continuing.)

      • Place either a 1 or 5 gallon container under the faucet and measure the amount of time it takes to fill the container in seconds.

      • Refer to the chart below. Find the row on the left that contains the size of the container you used to fill with water, either 1 or 5 gallons.

      • Then, find the column across the top that is closest to the number of seconds in took to fill the container.

      • The value in the table at the intersection of the row and column you determined is your flow rate in gallons per minute.

        Seconds to Fill Container 
        Container Capacity (gal)  5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
        1 12 6 4 3 2 2 1.7 2 1.3 1 1.1 1 0.9 0.9 1 0.8 0.7 0.7
        5 60 30 20 15 12 10 8.6 8 6.7 6 5.5 5 4.6 4.3 4 3.8 3.5 3.3

Not All Water Filter Systems Are Created Equal!

Crystal Quest® water filters remove hundreds of contaminants and LAST A LONG TIME. The unique high capacity and multi-stage design means no more over-priced and less effective water filters with replacement filter cartridges that have to be replaced every 100 to 500 gallons!

Pure Water Essentials offers Crystal Quest® water filtration products because Crystal Quest utilizes the latest technologies in the water industry coupled with 30 years of manufacturing expertise to provide you with high capacity, the most effective, healthiest and great-tasting water conveniently and at the most affordable price. Crystal Quest products are attractive, easy to install and use.

Crystal Quest Water Filter Reviews

The CRYSTAL QUEST® Pitcher Water Filter and Shower Filter were awarded "Best Buys" in the August 2006 issue of Consumers Digest magazine.

The CRYSTAL QUEST® Pitcher Water Filter, Shower Filters, Faucet Mount Water Filters, Countertop Plus Water Filter, Reverse Osmosis Filters, Refrigerator Filters, and Travel Water Filters have been recommended in "The Drinking Water Book - How to Eliminate Harmful Toxins From Your Water" (second edition 2006) by Colin Ingram, on pages 118, 119, 120, 121, 122, 134 and 160.