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0.5 Micron Tannin Reduction/Surface Modification 100% Coconut Carbon Block Water Filter | 20" x 4.5" (GT4-19SMC)

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Quick Overview
  • Made from 100% Coconut Carbon – Catalytic Highly Reactive
  • High Iodine 1200 for Increased Chemical Reduction
  • Effectively Reduces Chlorine, Tastes & Odours
  • Highest Contaminant Reduction Cartridge from Pure
  • Designed for Colour Absorption & Reduction of Organics
  • Available in 20” x 4.5” only, for Maximum Contact Time
  • 0.5 Micron Nominal Micron Rating
  • Over 95% Reduction of VOC’s as tested by WQA
  • Compliant to NSF/ANSI 42
Wholesale Price Break refresh image
SelectQuantityDiscountPrice per piece
6+28%0 $118.70
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GT4-19SMC - 0.5 Micron Surface Modification Coconut Carbon (For Reducing Water Discolouration/Tannin Reduction)

  • Ideal for Reducing Tannin Discolouration, Chlorine, Tastes & Odours in Tank** & Raw Water.

Surface Modification Carbon uses a unique blend of highly reactive catalytic coconut carbon with the highest performance reduction technology. SMC filters are the best type of cartridges to reduce water discolouration, including rust and most tannins. Surface Modification Filters are commonly referred to as ‘Tannin Removal Filters’. Also filters Chlorine. 

A Note on Treating Tannin:
Tannin removal can be a bit hit and miss - usually carbon will remove most of the tannin, but sometimes it doesn’t. Because of this, we normally recommend doing a small scale “litmus test” with a cheap carbon filter to see if this makes a difference to the colour. If it works, then we can be more certain that you will get a good result with a standard carbon filter, and a great result with this 0.5 Micron SMC Tannin Reduction filter! Please contact us before purchasing this filter if you are unsure about the source of colour in your water, so that we can help you with the right recommendation to get the best result!

Tannin Reduction Filter Combo Example* (For Tank/Bore**) (Recommended Over 50 psi/344 kPa Pump Pressure):

Filter 1: 5 Micron Pleated OR 5 Micron Poly Spun Sediment Filter
Filter 2: 0.5 Micron Tannin Reduction Carbon Block 
Filter 3: Ultraviolet Treatment

Pure Coconut Carbon Block Filters are made from a combination of high-performance coconut shell carbon, unique binders and industry leading manufacturing processes to deliver trade quality carbon block filters. They deliver exceptionally low pressure drop while maintaining a high dirt holding capacity with excellent contaminant reduction capabilities.

Pure Carbon Blocks are registered in compliance with NSF/ANSI 42, 53, and 61 for several things, including VOCs, THM’s, Lead & Heavy Metal Reduction, Chloramine Reduction & Chlorine Taste & Odour reduction. This also includes meeting standards of purity & safety of the materials used.

Surface Modification Carbon is a new advancement in carbon block technology. This technology focuses on the absorption factor of coconut carbon to provide the highest rate of removal in a fraction of the contact time usually required by standard GAC filters.

The prestigious SMC 4520-P5 Pure Catalytic Coconut Carbon cartridge boasts the highest absorbance capacity on the market for a cartridge its size. Measured in Chlorine Removal Capacity it handles a whopping 565,000 L of water @ 3ppm Chlorine before falling below the benchmark 85% reduction limit. This filter is jam-packed full of special carbon with the highest density and weight in the Pure Range.

*The golden rule when it comes to tannin is contact time. This is important to note as tannin removal in water is one of the more difficult things to achieve as there are copious amounts of different tannins, all of which react differently to carbon and require different types and blends (such as coal carbon) to produce an effective rate of tannin reduction. 

Filter Size: 20" x 4.5"

Filter Type: Catalytic Coconut Carbon - Tannin Reduction 

Micron Rating: 0.5 Micron Nominal 

More Information
Product TypeWater Filter Cartridges

Big Blue Replacement

Surface Modification - Tannin Reduction Water Filter

0.5 Micron - 20" x 4.5"

Chlorine Taste & Odour Removal Capacity
565,000L @ 15L/Min

Differential Pressure
34.5kPa @ 15L/Min

Return Policy

Due to the nature of the products we sell, a strict return policy is in place. We work with food grade certified materials that must be un-opened and un-used as to be able to be re-sold.

You may receive a refund or credit of equal amount, less the restocking fee if applicable and any other deductions that are relevant.

  • Wrongly purchased items may be returned for a merchandise credit, this applies for but not limited to: Wrong size, wrong system etc.
  • 30 Day return Policy: Returns will not be accepted without prior approval or after 30 days of invoice date.
  • All returns will incur a 17.5% restocking fee or cost to send the item to you whichever greater. FSA may use discretion to determine the restocking fee.
  • Any damages (minor, that can be repaired) will incur a fee which will be deducted from the total refund which will be equal to the cost of the replacement
    parts (List Price) and labour charge (if applicable) to repair the system(s). This will be separate to the restocking fee.
  • Any damage considered to be major and not feasible for repair may be refused and the return request will be void. The customer will be responsible for the return freight or disposal of the damaged unit.
  • Return shipping is to be paid by the buyer to the address provided. It is recommended that the customer applies transit warranty to the return freight in case of damage.
  • Any damages to the system that were not reported to FSA within 48 business hours of receipted delivery are not covered under our transit warranty.

  • Should the item appear faulty or doesn’t work how described, the unit/item must be returned for testing (if requested), the return postage paid by the buyer. If the unit/item is deemed to be faulty, compensation will be provided for the postage cost (Proof of cost required). If the unit/item is deemed to be in working order and as described, the buyer will responsible for return postage.

If you have any questions about our return policy, please contact us before purchase. This will also help to ensure you purchase the correct product that suits your requirements.