British Berkefeld® 7″ Ultra Sterasyl® Ceramic Water Filter (NSF Certified)
The Ultra Sterasyl Ceramic Water Filter is the world’s only NSF-certified gravity filter meeting NSF/ANSI standards 42, 53, 372, and 401. It’s our bestselling filter and trusted replacement for all British Berkefeld® and Berkey® gravity water filter systems.
British Berkefeld® NSF Ultra Sterasyl® Ceramic Water Filter (7″)
Compatible with Berkey®, British Berkefeld®, ProOne®, Alexapure, Patriot Pure & More
This NSF-certified Ultra Sterasyl water filter effectively removes a wide range of contaminants including;
- Bacteria: Effectively removes bacteria like E. coli, cholera, and typhoid.
- Chlorine: Reduces chlorine levels, improving taste and odor.
- Heavy Metals: Reduces lead and other heavy metals like aluminum, chromium, copper, and cadmium.
- Microplastics: Removes microplastics from drinking water.
- PFAS: Reduces the presence of PFAS, also known as “forever chemicals”.
- Pesticides and Herbicides: Filters out a range of pesticides and herbicides.
- Pharmaceuticals: Reduces the presence of pharmaceuticals in water.
- And Many Other Chemicals: Removes a variety of other chemicals and contaminants.
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No priming or red dye test needed — easy to install and maintain
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Retains healthy minerals naturally present in water for fresh, clean taste
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Durable microfilter ceramic exterior with granular activated carbon & heavy metal removal media inside
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Replacement Schedule: Recommended replacement every 12 months or 3,000 litres (800 gallons) per set of 2 filters.
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Not compatible with Berkey PF-2 fluoride and arsenic filters (see Ultra Fluoride filters for fluoride removal)
- W9121226
Select the Number of Water Filters You Need:
452 in stock
Lab Test Results Link
PLEASE NOTE: It is not recommended to combine Ultra Sterasyl and Ultra Fluoride filters together in your gravity system, as this will affect the performance of the filters.
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Not compatible with Berkey PF-2 fluoride and arsenic filters
- Not suitable for salt water or water softened by water softeners
- Replacement Schedule: Recommended replacement every 12 months or 3,000 litres (800 gallons) per set of 2 filters.
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The only gravity filter certified to NSF 42/53/372/401 worldwide
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Compatible with gravity systems from British Berkefeld, Berkey, ProOne, Alexapure, Phoenix, Purewell, and more
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Filtration rate: 2 filters produce up to 2 litres of filtered water per hour*
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Installed in the upper chamber of your gravity filter system
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Includes wing nuts and washers for easy installation
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Improves taste and odour by reducing bacteria, heavy metals, trace organics, PFAS, pharmaceuticals, and more
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Eco-friendly — made from 100% natural materials
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Weight: 0.6 kg (1.6 pounds)
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Dimensions: 2 x 2 x 7 inches
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Colour: White ceramic
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Designed and manufactured in Britain
Specifications: British Berkefeld® Ultra Sterasyl® Ceramic Water Filter
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Filtration rating: Nominal >99.9% at 0.5–0.8 micron
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NSF Certified: Tested and certified by NSF International to NSF/ANSI Standards 42 & 53 for particulate, turbidity, and cyst reduction
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Compatible systems & filter quantities:
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1 filter fits 1 Litre Baron
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2 filters fit 6 Litre Duke
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2 or 4 filters fit 8.5 Litre Duchess
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2 or 4 filters fit 12 Litre Prince
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2, 4, 6, or 8 filters fit 22 Litre King
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Compatible Water Systems
Our Ultra Sterasyl and Ultra Fluoride ceramic water filter cartridges fit most stainless-steel gravity water filter systems on the market. Enjoy improved water quality with British Berkefeld filters, which remove up to 99% of chlorine, significantly enhancing taste and odour. They also reduce a wide range of contaminants, including heavy metals and bacteria.
Compatible Brands & Models:
| Brand | Models |
|---|---|
| Berkey® | Travel Berkey®, Big Berkey®, Berkey Light®, Royal Berkey®, Imperial Berkey®, Crown Berkey® |
| Newton | 6 Litre, 8.5 Litre, 12 Litre |
| ProOne | Big+, Big II |
| Phoenix Gravity | 6 Litre, 8 Litre, 12 Litre |
| Purewell | 1.5 Gallons, 2.25 Gallons, 2.9 Gallons |
Not sure if your system is compatible?
We’re happy to help! Please email us at info@canadawaterfilter.com with your system’s make, model, filter housing dimensions, and any other details. Your input helps us expand our compatibility list!
