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Dental Surgery Reverse Osmosis System with TDS meter

1 x High Quality Dental Reverse Osmosis Water Filter

Works on all Autoclaves

Kit Includes Everything You Need

Easy and Quick to Fit - Plumber Optional

Free Help and Support

Ten Year Full Parts Warranty

Todays Price
£440.40INC VAT
£120.00 (-21%)
Our Usual Price
£560.40 INC VAT
In stock | Only 176 left at this price | Next Day Delivery
Free Delivery & Returns
Order before 3pm for same day dispatch today

"It's absolutely fine. Does the job. No issues at all. The water's always on tap and ready to go now - we used to use a distiller. The new system feeds our 2 autoclaves and now that we've tested it on one chair we're going to use it on the ultra sonic scalers and fast hand pieces on 5 chairs."

Hillcrest Dental Practice
UK Water Filters Promise
If you change your mind about your purchase, for any reason, within 90 days, you can return your product for a full and complete refund. PLUS we will pay for your return postage (UK)

All orders shipped same day before 3pm

Free Delivery & Free Returns

(We’ll even pay your postage!)

3 Year full parts warranty

What you get
Product Description

Water Filters for UK Dental Surgeries

High quality, reliable units, specially designed for UK Dentists.

Key benefits

  • Removes up to 99.98% of impurities from UK mains water
  • Ideal for autoclaves / sterilisers
  • HTM 01-05 Compliant
  • Reasonably priced - can save you thousands compared with some alternatives.
  • Full, courteous support provided by experienced professionals.
  • Easy to install
  • Small footprint - saves you space
  • Featuring a mixed bed de-ionising post-membrane filter cartridge to guarantee consistent high quality water
  • Will last for many years
  • Ten Year Full Parts Warranty
  • Includes a TDS meter to measure your water quality (Shows you In vs Out comparison to confirm filter is working).
  • Guaranteed to reduce TDS below the required 10 ppm

Very pleased, working very well... we log the water purity once a week and it's really good because we have got the TDS meter so you can see the difference between when the water comes in and when it comes out. The reading should be 10 or less and it always comes out around 3 which is really good." Independent Review by Carbis Bay Dental Care


Dental Surgeries might use distillers to purify their water. However these are expensive and have various disadvantages. For example, they produce the purified water slowly - which can be frustrating. They can also use significant amounts of electricity.

Or you might be getting ionised water delivered. This can be cheaper than a distiller but there's the hassle of stock control and deliveries plus the admin time in paying the regular invoices etc.

Another method for purifying your water is Reverse Osmosis (RO). This is a highly efficient way of purifying water, on demand, which is becoming an increasingly popular solution for UK dentists.

"We used to use a distiller in the decom room but it wasn't quick enough. This unit is far better. It fills a jug up in one go rather than having to wait around half the morning. And it's much more cost effective." Independent Review by Boroughbridge Dental Centre

How it Works

RO is a relatively quick, easy, one time installation. It filters your normal mains supply into medical grade water.

A semi-permeable membrane separates water molecules from larger ions or pollutants.

Our systems use the latest technology RO membranes for efficient performance and high yield production. They filter down to > 0.003 microns.

Plus it comes with a post-membrane demineralising cartridge and a TDS (Total Dissolved Solids) Meter.

This measures the electrical conductivity / quality of both your incoming and filtered water and helps you monitor the state of the crucial membrane filter.

The system relies solely on water pressure ie requires no electricity.

The kit comes with a self tapping valve. No plumber is required. A normal handyman can fit the system easily - though some practices prefer to use a plumber.

See a Table of the problem contaminants removed by this special Dental Surgery Water Filter

Water Output

How much water does the unit deliver?

This depends on the size of the tank and the incoming water pressure. RO is a very fine filtration process that slowly fills up a reserve tank.

The tank will be full in the morning. The water that comes through the tap is actually coming from the tank. As you draw water off the tank will begin to refill.

How fast the tank refills depends on your incoming water pressure. But, as an example, say you emptied the whole tank in one go, you should be able to draw a litre of water after about 10 or 15 minutes. If that happens often, you can simply order an extra tank to have a larger reservoir of water to draw from. (Or you can have one larger tank rather than two smaller ones). Either one would be very simple to retrofit . We'd be available on the phone to explain how to do it. So you could just start with the standard dental RO system and see how you get on.

"Very good product. We've had it for almost 4 years now. We set it up as an extra tap in the kitchen - which comes with the kit. We take the filtered water from that to fill the autoclave every couple of days... We used to use Ionised bottled water but it was fiddly... We also use it for the water going to the drills but add some altron for that. It's simple and highly cost effective compared to other options." Independent Review by Kim Senior Nurse / Fairoaks Surgery


Many UK dental surgeries can end up paying many hundreds of pounds - or even more - for their water purification systems.

This certainly isn't necessary.

It's important to note that Reverse Osmosis is a process. It doesn't have "degrees of performance" - it either works or it doesn't... So if you are paying a lot more for one RO system over another you need to ask why.

We have seen some dental surgeries who have been sold very expensive water filters which are basically ROs with a fancy cover - and possibly extra filtration such as Ultra Violet (UV) - which frankly just isn't necessary.

(UV is another highly effective method for killing bacteria etc. But it is designed for non-municipal water supplies. Adding it to an RO is completely unnecessary. The RO already deals with bacteria plus many more contaminants. But perhaps the extra UV helps justify a higher price tag!)

Special Offer: Even though our special dental surgery Reverse Osmosis filter systems are of a higher quality than many on the market, we are offering them to you here at a Special Sale price of only £367 plus VAT

Read More

More Information on Dental Practice Water Filters

The Difference Between Reverse Osmosis And Distilled Water

Installing The System

Replacing The Filters

Unit Size and Dimensions

Is Your Water Pressure High Enough

List of contaminants removed by Reverse Osmosis

More Information on Dental Practice Water Purifiers

RO filtration gives you very high quality purified water. It removes just about every contaminant you can think of.

(Many dangerous contaminants, like bacteria, are taken out at the water treatment plants. However other contaminants get left in, which RO will remove).

Be wary about buying a cheap RO.

Despite what we said above about RO being a "process", cheaply made and/or deteriorating parts can lead to tiny leaks between the seals within the system. This risks contamination of the end-water.


"It's good. We use it to feed the autoclave and all the water goes through it fine / it's never rejected. In fact we've recently bought another one for our other practice." Independent Review by Lowrie Farr, Manager, Roach-Price & Morris

The Issue of Waste Water

As part of the Reverse Osmosis filtering process about 60% to 70% of the incoming water is rejected.

The "waste / rejected water" is automatically sent down the drain.

However please note that this is only lost from the water supply you are filtering - ie to your sterilising equipment and not all the water you use in the surgery. So the cost of this wasted water isn't as big an issue as it might seem.

What's the Difference Between Reverse Osmosis And Distilled Water?

Many dental surgeries use distilled water. Reverse Osmosis and water distillation are totally different processes.

A distiller boils water, catches the steam, and condenses it back into water, while Reverse Osmosis filters water through a semi-porous membrane.

Both systems rely on carbon water filters to remove some chemicals.

While Distillation removes sodium and other minerals better than Reverse Osmosis, they are not that good at removing volatile chemicals with a low boiling point.

However both processes produce very pure water. The only real difference is in the economics. Reverse Osmosis tends to be much better value at least compared to the ongoing service contracts charged to Dental practices by distilled water producers.

"We used to have a large distilled water machine which cost a fortune. We got this reverse osmosis filter when we moved into the new practice. We use it for the autoclaves and are very happy with it. There's no more waiting around for the distilled water. Now it's on tap whenever we need it so it saves us a lot of time. It works very well. Plus the replacement filters are very easy to fit." Independent Review by The Village Dentists / Cramlington

Installing The System

Everything you need is in the pack.

It's very easy to install. No plumber is necessary - unless perhaps you have a complex autoclave system.

The unit feeds to a 1/4 inch diameter pipe (6.4mm). These are the standard size and most autoclaves will accept them with a simple quick fit connection.

(Please note we can supply adapters if necessary - free of charge).

Or you may want to hand feed your steriliser - in which case you simply use the special dispensing tap that is included in your kit.

When installing the unit you might need a plumber if your undersink pipework is different from standard. But this should be a simple, one hour job for them at most.

Otherwise it is all designed to be done by someone who's basically competent at DIY.

Full instructions are included. It should take 20 or 30 minutes. As far as tools go, you will need a normal electric drill. That's all.

And we've got friendly (and free) support available.

Replacing Your Filters

Like all water filters you will need to replace the filters on the system periodically to ensure maximum performance.

You need to change four of the filters every 6 months.

"We're really pleased with this unit. It's easy to use and change the filters. The company is very helpful." Independent Review by Cote Royd Dental / Huddersfield

We send you free reminders.

The current cost for the full replacement kit is is £39.17 Plus VAT.

Replacing these is very easy and will take a few minutes at most.

Please note that these replacement parts will be easy to find anywhere. This is an important consideration in a market where many entrants come in - often with specially made filters with unique replacement parts - only to disappear.

Our units use agreed industry standard size cartridges, membranes and other parts. So in the unlikely event of our disappearing, you will never be left high and dry. (We've been in business for approx 10 years).

Every 3 years or so you will need to change the membrane filter.

You will know when to do this by monitoring your TDS meter readings. (Full instructions are supplied)

The current cost of a new membrane is £79.

All the required filters are included when you purchase the RO system.

For technical specifications and Dimensions click the tab above

Is Your Water Pressure High Enough

How To Check Your Water Pressure is OK

For full performance details of our RO units please click here

Supplied complete with all fittings and ready for immediate installation - including tap

Features Summary:

HTM 01-05 Compliant

Everything you need to install the system is supplied

no plumber needed

Full instructions included

Easy to use

Reliable operation

Free Technical Helpline to assist with any problems

Full Money Back Guarantee

Compact design

Failsafe flow restrictor

Auto shut-off/on full tank

Pre and post filters need to be changed every six months (current cost £47 incl VAT and delivery)

Reminders to change are sent

State-of-the-art TFC membranes have a life of approx 3 years - depending on local water quality.

(The TDS meter included in the pack will indicate when a change is needed. Current cost of replacement membrane filter is approx £79 incl VAT


RO unit 410 mm High x 340 mm x 140 mm

Storage vessel is 420 mm High x 280 mm wide (The storage vessel can be placed several yards from the RO unit).

Recent Questions:

(09:14:27) Hayley: We are looking at purchasing the Dental Surgery Reverse Osmosis, could you tell me how much water you feed in to how much sterilised water you get out?

(09:26:54) UKWF Staff: Hello Hayley. Thank you for your question. As part of the Reverse Osmosis filtering process about 70% to 80% of the water is rejected. (But this is only the filtered water ie not all the water used in the surgery! The estimated average cost of this waste water is only around 40p per month).

Here's what you get ...

  • 1 x high quality Reverse Osmosis water filter system
  • 1 x TDS high sensitivity water testing meter
  • 1 x quick "no-plumber" connection to your water supply
  • All required tubing
  • 1 x Set of high quality cartridges - all you require
  • 1 x optional drinking water tap
  • Everything you need to get your practice sterlising water filtered to a very high standard
  • Easy instructions
  • Free Delivery
  • Guaranteed for 3 years


With FREE Delivery

Immediate Dispatch

Purchase with Total Confidence

Money Back Guarantee

Click here for delivery information

No hidden extras

If you don't like what you get, send it back for a full no quibble refund.

If for any reason you decide to return your purchase we promise you a no questions asked THREE MONTH Money Back Guarantee. Click here to read the "large print" about our Money Back Guarantee.

PLUS We'll even pay your return postage !

Please order now to secure today's sale price.

Product Code: RO-DEN-UKWF

Dental Surgery Reverse Osmosis Water Filter
Technical Information


Capacity Gallons per day (GPD) 50 Gals / Day Feed Water Pressure 3 bar min to 6 bar max Feed temp (Degrees C) 4 to 29

The Unit is NOT designed to filter HOT water. It should only filter water at ambient temperature.

RO Unit Dimensions

Height 410mm Width 340mm Depth 140mm

12 Litre Storage Vessel (Free standing, connected to RO unit by tube, can be placed several yards away)

Storage Vessel Height 420mm Storage Vessel Diameter 280 mm Storage Vessel Capacity (max) 9 ltr.

The unit should be fed by a "potable" water supply ie mains water.

What is Removed

Aluminium 96-98%
Ammonium 80-90%
Bacteria 99%+
Boron 50-70%
Cadmium 93-97%
Calcium 93-98
Chloride 92-95%
Chlorine 98%+
Chromate 85-95%
Copper 96-98%
Cyanide 85-95%
Fluoride 92-95%
Hardness 93-97%
Iron 96-98%
Lead 95-98%
Magnesium 93-98%
Manganese 96-98%
Mercury 94-98%
Nickel 96-98%
Nitrate 80-95%
Phosphate 95-98%
Potassium 92-96%
Silica 80-90%
Silicate 92-95%
Silver 93-96%
Sodium 92-98%
Sulphate 96-98%
Thiosulphate 96-98%
Zinc 96-98%

Is Your Water Pressure High Enough

The unit is designed to operate between 40 psi (2.75 bar) to 80 psi (6 bar) (psi = pounds per square inch).

Please note that the only problem you are likely to encounter with operating a Reverse Osmosis unit in your Dental Practice is if the water pressure is not high enough.

The vast majority of UK properties have water pressure that is higher than the required 40 psi.

How To Check Your Water Pressure

The simplest thing to do is to turn your cold water tap on fully. Stand a few feet away. If you are being splashed with at least a few droplets then your pressure should be high enough.

If this is not happening you should call your local water supplier. They should be able to tell you what your water pressure is and whether it is likely to drop below 40 psi at any time.

Changing the Cartridges

The four main filter cartridges need to be changed every six months (Cost £39.17 plus vat).

We will send you a reminder every 6 months to change these filters.

6 Month Four Filter Pack Replacement Code: FRO-DEMIN

You can order a spare 6 month four filter pack here

The largest filter, the RO membrane has a life of approx 3 years (This depends on your local water quality) You'll know when a change is needed because of the obvious change in taste. We send you a reminder every three years.

Cost of replacement membrane is £79

Replacement Membrane Filter Code: MEM-RO

You can order a spare membrane filter here


With FREE Delivery

Immediate Dispatch

Purchase with Total Confidence

Money Back Guarantee

Click here for delivery information

No hidden extras

If you don't like what you get, send it back for a full no quibble refund.

If for any reason you decide to return your purchase we promise you a no questions asked THREE MONTH Money Back Guarantee. Click here to read the "large print" about our Money Back Guarantee.

PLUS We'll even pay your return postage !

Please order now to secure today's sale price.

Delivery & Returns

Free Second Class - up to 5 days (90% arrive in 3 days)

First Class - up to 2 days (95% next day delivery)

Free Returns and Money Back Guarantee. Full details

Free Lifetime Support

If you have any problems

... or concerns with your purchase we are here to help.

We are not "here today gone tomorrow" merchants.

A quick look at our Customer Feedback

... and our Money Back Guarantee should help reassure you that we are an honest firm who will give you a first class, long term service.

How to get help

Call our help line on 020 8761 6611 at any time during UK office hours ie 9 am to 6 pm

Or email us for a rapid response.

Our policy is always to get back to you within an hour - or one working day at most.


In addition to your 3 Year Warranty, if for any reason you change your mind about your purchase within 90 days of receiving the goods, you can return your product for a full and complete refund *

PLUS we will pay for your return postage (UK only)

*This applies to individuals/ consumers using the products in domestic settings. Businesses please see our terms and conditions

Delivery Times

Order before 3 pm on any working day and we guarantee your order will be sent out the same day (not on weekends)

(To be honest we often manage to send them even after 3pm. But we can't promise that).

All prices on the website include delivery charges and VAT except where stated otherwise.

Delivery Charges

Your Standard "Free Delivery Included" is Second Class

This usually takes between 3 to 5 working days ie does not count weekends or Bank Holidays

Pay Extra for First Class

You also have the option at checkout to pay extra for First Class.

This should result in next day working delivery to mainland UK.

BUT please note while 95% do arrive next day this is not guaranteed.

However arrival within two working days is almost certain.

You can see your delivery costs at the checkout stage before you buy.


Over 30,000+ happy customers

The great majority keep coming back for years because they like our friendly, helpful service and great value prices.

Free Delivery & Returns

All Orders Shipped Same Day Before 3pm

3 Year Full Parts Warranty