Doulton Biotect Ultra 10″ Replacement Filter Cartridge (Model 2501)

Doulton Biotect Ultra 10″ Replacement Filter Cartridge (Model 2501), photo 2

Doulton Biotect Ultra 10″ Replacement Filter Cartridge (Model 2501), photo 3

Doulton

Biotect Ultra 10" Cartridge (2501)

Name: Doulton Biotect Ultra 10″ Replacement Filter Cartridge (Model 2501)
Brand: Doulton
SKU: 181823
Availability: InStock
Rating: 4.67 (15 reviews)

4.6715 reviews

The ceramic and carbon cartridge for Doulton benchtop and underbench systems. It is not a fluoride filter.

In stock in NZ

$109.95Incl. GST

or 4 interest-free payments of $27.49 with

Official Doulton dealer, in stock in NZGenuine product, sourced direct from the UK manufacturer.

Free shipping in NZ over $200 and to Australia over $400 (NZD, incl. GST).

Tracked delivery from New Zealand. 30-day money-back on unused items. Returns policy

2,300 Lor 6 months, whichever comes first

>99.9%microplastics, tested to NSF/ANSI 401

10"standard Doulton housing size

What it removes

Measured results.

Every figure names its source.

>99.9%

Microplastics

Tested to NSF/ANSI 401. Doulton specification sheet.

99.5%

Lead

Doulton specification sheet.

95.5%

Chlorine

Doulton specification sheet.

>99.99%

Bacteria and cysts

Doulton specification sheet.

95% / 90%

Cadmium / mercury, on average

Doulton specification sheet.

See all test data

Downloads

Manuals and test data.

Instruction manuals Test data Performance datasheets

Reviews

4.67

Average of 15 reviews from buyers on this store.

We get these on. A subscription because they are so good. It also keeps the cost down, which is a help. Our under sink set up is used constantly by our busy family.

Annabel, April 2026

Works well

Morley, April 2026

Turns out I need a different one, because this cartridge doesn’t fit my filter. I don’t like that there’s no standard—they keep changing their own products, so compatibility isn’t reliable.

Inessa, January 2026

very good product

Gilbert, December 2025

Questions

About the Biotect Ultra 10".

Ask us something else

Does Biotect Ultra remove fluoride?

No. Doulton does not market Biotect Ultra for fluoride. For fluoride, see the 9B04 pre-filter for DUO systems or the British Berkefeld Ultra Fluoride cartridge.