DoultonDoulton HIP DUO Under Sink System with Biotect Ultra
Doulton HIP DUO Under Sink System with Biotect Ultra
Doulton
Promising research
Waterdrop
Waterdrop M6SL Mineral Countertop Reverse Osmosis
Promising researchWhat does this mean? ›
£289at Amazon
Check availability
Price checked via Amazon on
Buy now at AmazonAlso at Waterdrop £329
Compare ›- Plug-in, no plumbing
- 3:1 pure-to-drain ratio
We may earn a commission if you buy through our links. How we choose ›
Plug-in, no plumbing
- Power
- Mains electric
- Install
- None (countertop)
- Material
- Plastic housing
Where we checked it: waterdropfilter.co.uk ›
Compare where to buy
We may earn a commission if you buy through our links. How we choose ›
Why we picked it
It is a plug-in countertop RO unit that needs no plumbing, wastes 1 litre for every 3 litres filtered, and adds back potassium, calcium, sodium and magnesium. Waterdrop states it is certified to NSF/ANSI 58 and 372.
Best for
Renters who want plug-in RO with minerals added back, at a lower price than AquaTru
Not for
Buyers who want certification they can check in a public listing before paying
The details that matter.
- • Plug-in, no plumbing
- • 3:1 pure-to-drain ratio
- • Adds minerals back for taste
- • NSF/ANSI 58 stated by the brand, listing not found
Specifications
- Power
- Mains electric
- Install
- None (countertop)
- Material
- Plastic housing
- Filter media
- Composite pre-filter, RO membrane, mineral post-filter
- Pure to drain
- 3:1
Certifications
How strong is the research? What our grades mean ›
- Strong research
- Independent certification or lab data for the specific claim.
- Promising research
- The material is well supported, but there is no product-level testing.
- Early research
- Little independent research.
- Mixed research
- Research findings disagree.
- £
- Under £20
- ££
- £20 to £79
- £££
- £80+
