British Berkefeld Ultra Sterasyl Ceramic Filter Elements

Replace your gravity system filters with the same high-performance elements trusted worldwide.

British Berkefeld’s Ultra Sterasyl ceramic filters provide long-lasting protection from a wide range of contaminants — independently tested and certified for performance. With a 0.9-micron absolute pore size and activated carbon core, they reduce chlorine, microplastics, VOCs, and more — while preserving essential minerals like calcium and magnesium.

See official certifications here and the full lab test data here:

• Ultra Sterasyl Chemical Reduction Test
• Ultra Sterasyl E coli Test
• Ultra Sterasyl Lead Test
• Ultra Sterasyl Metals Test
• Ultra Sterasyl Pesticides Test
• Ultra Sterasyl PFAS report
• Ultra Sterasyl Pharma Test

• NSF/ANSI 42, 53 & 401 Certified for microplastics, cysts, particulates and turbidity
• Lab-tested bacteria, PFAs, pesticides & heavy metals removal
• No power or pressure required – ideal for off-grid and emergency use
• Long lifespan – filters up to 400 gallons (800 gallons per pair)
• Fits all British Berkefeld gravity systems and compatible with similar stainless gravity units

• Wingnut
• Sealing washer
• Installation instructions