To continue enjoying fresh, clean, and great-tasting water in your Doulton or British Berkefeld system, we recommend changing your ceramic filter every 6 months. This will not only ensure exceptional taste but also maintain the most effective contaminant reduction in line with our rigorous testing results. If you are also using a pre-filter cartridge in your Doulton DUO or TRIO system, these may need replacing every 3 to 6 months depending on which pre-filters you are using. Identifying what filter or cartridge you need is easy, and knowing how to check which one you need avoids ordering the incorrect product.
How to easily identify your Doulton or British Berkfeld filter
Check the Name: Look for the filter name on the side of your ceramic filter: Biotect Ultra, Biotect Ultra SI, Ultra Sterasyl or Ultra Fluoride are some of our most popular ones.
Find the Code: Alongside the name, you may also see a unique 4-digit code. This is the filter’s identification number and will help to ensure you get the right replacement.
Some new filter caps may also have a QR code on, which you can scan to find more information.
Once you’ve located the name and code, click the button below to go to our filter collection.
Never run out of exceptional-tasting water by signing up to our filter replacement service. For a limited time, you can enjoy 20% off on all filter replacements when you subscribe. You'll automatically recieve your filter replenishment to your door every 6 months, meaning that you can relax and simply enjoy each sip.
Find your filter
Browse the range of filters and pre-filter cartridges from Doulton and British Berkfeld to find your perfect solution today.
More Information
Are Doulton filters compatible with British Berkefeld systems?
Are Doulton filters compatible with British Berkefeld systems?
No, you cannot use Doulton ceramic filters with British Berkfeld systems. Doulton's range of filter systems are designed specifically for Doulton-branded filters. For British Berkfeld, the Doulton filters cannot be fixed into the gravity-fed system type.
Will British Berkfeld filters fit Berkey systems?
Will British Berkfeld filters fit Berkey systems?
Yes, British Berkefeld filters are compatible with Berkey systems, alongside a range of other brands with similar stainless steel gravity systems. For compatibility questions please reach out to filtersales@doulton.com
I still need help finding my filter...
I still need help finding my filter...
For any additional help or guidance, please contact our customer service department via email on filtersales@doulton.com - please include any relevant information about your system and current filter.






