SKU: 40348310287

Doulton Ultracarb Water Treatment Cartridge (To fit under sink or inline systems only)

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Description

Doulton Ultracarb Water Treatment Cartridge (To fit under sink or inline systems only)Doulton Ultracarb Replacement Filter Suitable for use with Stainless Steel Countertop System Only Replacement Doulton Supersterasyl Ceramic Filter These genuine filters are made in England and will filter absolute to 0. 9 microns. These Premium filters needs to be replaced every 2300 litres of water filtered. Higher levels of chlorine, chemical contamination, or sediment, will slightly shorten the life of the filters. Recommended for use on town, tank

Doulton Ultracarb Replacement Filter Suitable for use with Stainless Steel Countertop System Only

Replacement Doulton Supersterasyl Ceramic Filter 

These genuine filters are made in England and will filter absolute to 0.9 microns.  

These Premium filters needs to be replaced every 2300 litres of water filtered.

Higher levels of chlorine, chemical contamination, or sediment, will slightly shorten the life of the filters.

Recommended for use on town, tank or alternative water supply. 

Silver impregnated ceramic walls makes these filters superior to other ceramic filters.  

Laboratory Test results show these filters are very efficient at removing impurities such as chlorine, bacteria, amoebas, suspended solids, organic pesticides, some heavy metals, bad tastes and smells. They will remove 99.99% of Giardia and Cryptosporidium. 

Doulton Ceramic Candles and Cartridge Grades

Supersterasyl membrane: (candle and cartridge form): Used for microbiological removal. The only ceramic element in the world to meet the stringent NSF antimony and arsenic extraction test featuring:

  • >99.99% E.coli removal
  • Tested with live Cryptosporidium cyst to 100% removal far exceeding EPA three log cyst reduction requirements
  • 100% efficiency at 0.9 µm absolute (0.5 µm absolute ANSI standard)
  • > 98% efficiency at 0.2 µm
  • > 90% efficiency at 0.05 µm

Doulton's Extensive Development Laboratories are continually setting new standards in water quality throughout the world. Their commitment to quality has been demonstrated by achieving ISO 9002* certification, tested and approved by:

  • The British Standard 5750
  • The World Health Organization
  • Department of Health (Toronto, Ontario)
  • Water Research Council (London, England)
  • University of Arizona (USA)
  • Spectrum Labs (Minneapolis, USA)
  • WRC (Buckingham Shire, England)
  • National Sanitation Foundation (Standards 42 & 53, USA)
  • Hyder Labs, Cheshire England
  • Loughborough University, England
  • Thresh, Beale & Suckling Laboratories, England.
  • Clare Microbiological Laboratories, England
  • Severn Trent Laboratories, England
  • And Many Other Independent Laboratories Worldwide

* ISO, based in Switzerland, is an international agency that set standards for product manufacturing procedures and processes. Doulton is an ISO 9000 accredited company. As such, it undergoes regular audits by this authority in order to retain its accreditation. Doulton customers throughout the world, are therefore guaranteed a consistent supply of first class, quality assured products.

Over a million units sell each year in over 150 countries around the globe, where Doulton is a household name synonymous with clean, healthy drinking water.

Consider the rest then go with the best!

Doulton Filter History

You may associate the name of Royal Doulton with fine tableware and figurines, but do you know how they came to have the word "Royal" associated with their name?

As early as 1827, Henry Doulton developed a ceramic filter to remove bacteria from the contaminated Thames River, to provide safe drinking water. In 1835 Doulton made a gravity fed stoneware water system combined with the ceramic filter, for use by the royal household. By 1862 with the advancement in microbiology Doulton created micro porous ceramic filters capable of removing more than 99% of bacteria.

The tiny pores of the ceramic filter known as depth filtration, make it extremely efficient at removing particulate matter and fine sediment. The tightly packed activated carbon will remove taste, odours and unwanted impurities through a process called adsorption. The ceramic wall of this filter has been impregnated with silver ions to prevent the growth of bacteria in the filter itself and also in the stored water. (The silver is not painted on the inside of the walls like other filters and will not disperse into the filtered water or wear out in 6 months.) Since the beginning of the century Royal Doulton has been a leading name in water filtration, world renowned for high guality and reliability.

For their achievements made in water filtration, Doulton was given the right to use 'Royal' in their name in 1902.

How Activated Carbon Works to Filter Your Water

Activated carbon or AC, works by attracting and holding certain chemicals as water passes through it. AC is a highly porous material, therefore it has an extremely high surface area for contaminant adsorption.( Adsorption is the phenomenon whereby molecules adhere to a surface with which they come in contact with. When water containing soluble organic materials comes into contact with the granular activated carbon it selectively removes these materials by adsorption.)  
AC is made of tiny clusters of carbon atoms stacked upon one another. The carbon source is a variety of materials such as peanut and coconut shells or coal. the raw carbon source is slowly heated in the absence of air to produce a high carbon material. The carbon is activated by passing oxidizing gases through the material at extremely high temperatures. The activation process produces the pores that result in such a high adsorptive rate.

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 40348310287

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4.7 ★★★★★
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Cynthia perez
Lowell, US
★★★★★ 5
Great
Size: 36inch, Color: Light Walnut, Size: 36inch, Color: Light Walnut
Got the job done very light weight but durable great condition installation was super easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
V
Verified Purchase
Vanesa French
Draper, US
★★★★★ 4
Not a bad buy
Size: 36inch, Color: Light Walnut, Size: 36inch, Color: Light Walnut
Very Light weight, they look great though. Fairly easy to put together. Came with all parts I’ll be it scattered and the screws don’t look sturdy but I won’t be using the ones that it came with. Overall, fair price, quality is fair as well.
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Reviewed in the United States on January 16, 2026
B
Verified Purchase
Becky Z.
San Leandro, US
★★★★★ 5
Love these shelves!
Size: 48inch, Color: Light Walnut
These are incredible for the price! Feel & look like wood. Easy-ish to install - just take your time, measure twice & use a level. Very sturdy! Great hardware & instructions. Now my daughter wants some for her apt.
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Reviewed in the United States on February 22, 2025
A
Verified Purchase
Amber Danielle Farmer-Sutherland
Grantham, US
★★★★★ 5
Perfect!
Size: 24inch, Color: Walnut, Size: 24inch, Color: Walnut
Perfect! Just what I wanted. Sturdy, came with all the pieces, and very pretty wood.
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Reviewed in the United States on November 20, 2025
K
Verified Purchase
KB
Birmingham, US
★★★★★ 3
They worked for replacing shelves but I wouldn’t mount them on my wall
Size: 24inch, Color: Walnut
I specifically bought these shelves because of their dimensions. I have a built-in cabinet and when we moved in 6 or so years ago, the previous owners must have taken them with them when they moved. It’s been bothering me the whole time I’ve lived here and wanted to make some but just never found the time to get around to it. I measured them out and these floating shelves were perfect for the dimensions I needed to replace the missing shelves. Would I put these on my wall(s)? Absolutely not unless I corrected the mounting issues. One thing that really stuck out to me was how bad the design was for mounting these shelves. When I took them out of the packaging, the brackets were falling out of the back everywhere. This did not inspire too much confidence that if I hung them up, they would be stable. I’ve had a ton of floating shelves similar to this mounting design, but the arms that the boards slide into on the wall for this particular shelving are thin and flat (while being easily mailable with your hand alone) in comparison to every other one I’ve had being round, or at least decently thick, sometimes with additional screws that you can insert under the board and into the mounting arms for extra stability. Also, any time I’ve ever had to mount a similar floating shelf, it took some finesse and strength to release the mounting arms from the back of the shelf because they fit very snugly. The fact that the mounting brackets were falling out of the back means that they are not snug and prone to be very loose. Another thing that stuck out to me is that the shelves are hollow. Now, for my purposes, this is fine, but again, detracts significantly from the confidence that these would be stable if mounted on the wall and would most likely droop when weight was applied. I also took issue with the fact the boards had no protective covering and were jammed into a box, with the hardware pressing against one of the boards tightly. I just flipped the shelf over to mask the defect from packaging but the side I wanted to use because it had better coloring was the damaged side. Mine did not come with any mounting directions but some common sense would be all you needed to put up something so simple. However, it did not come with a template to mark the wall for spacing, which adds to the difficulty because you have to have precise DIY measurements to slide the boards onto the mounting arms correctly. To be honest, if I were to mount these, I would bypass the shoddy mounting provided and go with some heavy, durable brackets underneath. Overall, these shelves worked for my purposes but I can see how the reviews would be very mixed in terms of mounting and quality. I did get these on a limited time deal and they were priced at approximately $8 per shelf, which was a really good deal to get 4 shelves for that price in comparison to the “normal” price resulting in approximately $11/shelf. I wouldn’t have paid full price for these and would have been highly disappointed had I with the intention to mount them, especially since I would have needed to provide better and more stable mounting hardware. They are lesser quality than others within the same price range and I think you could do much better if your intention is to mount them.
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Reviewed in the United States on January 11, 2025

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