British Berkefeld SS2 Ultra Fluoride 8.5L
A NSF-certified gravity filter that is certified to reduce 3 contaminants.
This listing is the certified replacement cartridge (the part you change on schedule), not a complete installed system. Its certification applies when used in the matching housing or system.
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You want no plumbing and the lowest cost per gallon, and can refill a countertop tank.
Certified to reduce 3 contaminants.
Like most carbon filters, it does not remove fluoride — only reverse osmosis does that.
What is gravity filter? A stand-alone countertop tank (like a Berkey) that filters by gravity — no plumbing and no power. Compare all filter types →
What it costs to own
| Upfront price | Check on Amazon → |
| Replacement filter (SS2 Ultra Fluor) | Find replacement → |
| Estimated yearly cost (filters, ~0.5×/yr) | — |
| True cost per gallon | — |
Cost per gallon and yearly cost are our estimates from the rated capacity and current prices. The filter only works if you replace it on schedule.
What it's certified to remove
Certification is per-contaminant: the British Berkefeld SS2 Ultra Fluoride 8.5L is credited only for the contaminants listed here, verified by NSF. It does not imply removal of anything not listed.
✓ Verify this certification on the official NSF listing →
Full specifications
| Certified by | NSF |
| NSF/ANSI standards | 42 — reduces taste, odor, and chlorine (aesthetic standard) · 53 — certified for health contaminants such as lead, VOCs, and cysts · 401 — reduces emerging contaminants such as pharmaceuticals and pesticides |
| Filter type | Gravity filter |
| Flow rate | N/A gpm |
| Replacement element | SS2 Ultra Fluor |
| Installation | Countertop tank; no plumbing or power. |
Frequently asked
Is the British Berkefeld SS2 Ultra Fluoride 8.5L NSF certified?
Yes — the British Berkefeld SS2 Ultra Fluoride 8.5L is listed in the NSF certified-product database under NSF/ANSI standards 42, 53, 401. That means an independent body verified its claims (not just "tested to" a standard).
What does the British Berkefeld SS2 Ultra Fluoride 8.5L remove?
It is certified to reduce 3 contaminants: Cryptosporidium, Giardia, Turbidity.
How often do you replace the gravity filter?
A gravity filter like this is typically replaced about once every couple of years (replacement element SS2 Ultra Fluor). Replace on schedule — a spent cartridge stops reducing contaminants.
Source: NSF public certification listing. Specs and certified claims are from the official listing; cost figures are our estimates. Some links are affiliate links — see our disclosure.