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Refurbished RO systems
Tested and inspected RO systems for pure water at a reduced price.
See offersRO system + water softener pack
Complete protection with an RO system and a water softener.
Get 15% offRO system + hydrogen water generator pack
Combine reverse osmosis water and hydrogen-rich water.
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FREE SHIPPING
On orders of €150 or more within mainland France
(home products only)
Ships within 24 hours
+33 3 66 88 17 85
Call us Monday to Friday,
9:30 am–5 pm (Paris time)!
Email: contact@josmose.fr
Product video
At last, a tank-based RO system made in Europe! Discover our premium PURE BALANCE model
- AquaSpring system : calcium & magnesium remineralization (optional)
- Eco-friendly: sends only 1 liter to drain for every liter of RO water produced
- Sturdy & durable: German brand
- Also works without electricity
- Standard-sized filters
- Tank, faucet, filters, membranes included
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Frequently bought together
Certifications
Certifications
Quality accreditations for our RO systems
RoHS
Restriction of Hazardous Substances
The RoHS directive regulates the use of certain hazardous substances in electrical and electronic equipment to limit their presence in the components concerned.
CE marking
European conformity
CE marking indicates that the product concerned meets the applicable European requirements allowing it to be placed on the market within the European Economic Area.
FDA
U.S. Food and Drug Administration
The FDA is the U.S. authority responsible, among other things, for regulating many products related to food, health, and consumer safety.
Water Quality
Water treatment industry
This accreditation is associated with the water treatment and filtration industry and helps identify products that meet the relevant standards.
ISO 9001 & ISO 14001
Quality and environmental management
The ISO 9001 standard covers quality management systems, while the ISO 14001 standard addresses environmental management.
NSF
Standards related to water and public health safety
NSF develops, among other things, standards and evaluation protocols applicable to equipment and components used in water treatment.
Water quality and NSF certification
Understanding certification standards and the assurances associated with reverse osmosis membranes.
Are your RO systems NSF certified?
A reverse osmosis membrane referenced in Josmose documentation, the RHD3013-600, holds NSF/ANSI 58 certification covering the safety of its materials. This certification does not mean that all Josmose RO systems are NSF certified. The scope of certification must always be checked for the model and components concerned.
What exactly does NSF 58 certification guarantee?
The NSF/ANSI 58 standard covers, among other things, material safety and certain characteristics of reverse osmosis systems. For the RHD3013-600 membrane, the test documents indicate an analysis covering more than 150 substances, including solvents, phthalates, nitrosamines, and hydrocarbons. No exceedances of the applicable thresholds were found. Please note: this material certification does not validate the contaminant reduction rates of the complete RO system.
What is the difference between NSF 58 and NSF 61?
The NSF/ANSI 58 standard covers home reverse osmosis water treatment systems. The NSF/ANSI 61 standard primarily addresses materials and components in drinking water distribution installations, such as pipes and valves. The two standards serve different purposes and rely on appropriate safety criteria.
How can you verify NSF certification?
Visit the official NSF website and consult the drinking water treatment equipment database. Search for the manufacturer Ningbo RXHL Technology and model RHD3013-600. Check that the certificate matches the component used in your unit and review the characteristics actually covered.
Where are the RO systems and their membranes manufactured?
Josmose technical documentation indicates that they are manufactured in China. The manufacturer of the RHD3013-600 membrane, Ningbo RXHL Technology, is monitored by NSF as part of its certification. Manufacturing origin alone is not enough to determine the quality of an RO system: materials, checks performed, and traceability are also essential.
Do you have test results for the filtered water?
Independent testing of the units is listed as ongoing in our documentation. A TDS tester also lets you measure the total amount of dissolved solids in the water before and after filtration. This measurement provides an indication of how reverse osmosis is working, but cannot, on its own, verify the absence of PFAS, pesticides, or other specific contaminants.
Specifications
Technical Specifications
Pure Balance Technical Data
Find the main operating data for the Pure Balance: production capacity, inlet pressure, allowable temperature, weight, and dimensions.
| Specification | Value |
| Capacity | 12 L/h (75 GPD) |
| Inlet pressure | 1 to 5 bar |
| Water temperature | 4 to 35 °C |
| System weight | 8.75 kg |
| System dimensions | 485 × 410 × 195 mm |
| Tank dimensions | 350 × 260 × 260 mm |
Mineralized Water Quality
Typical composition after remineralization
The Pure Balance filter cartridge adds several minerals back into the water after reverse osmosis (RO). The values below are indicative and may vary with the quality and temperature of the inlet water.
| Component | Indicative value |
| pH | 7 to 8 |
| TDS | 60 to 80 ppm |
| Calcium | 10 to 15 ppm |
| Magnesium | 4 to 6 ppm |
| Sodium and potassium | < 5 ppm |
| Bicarbonates | 30 to 60 ppm |
| Chlorides | < 5 ppm |
* Water temperature: these values correspond to average-quality water at around 20 °C. Colder water may result in a lower mineral content, while warmer water may increase the amount of minerals released.
** After a rest period: after an hour or more without use, the mineral concentration of the first glass may be higher than the values shown in the table.
Installation & Maintenance
Installation
Installing your Pure Balance RO system
Here is a video we made to help you install your Pure Balance RO system properly.
Installation guide
To complete the video, also see our guide to installing a home RO system .
Need help?
Our tips for a successful installation
Phone support
When you buy an OJA RO system, you get free phone support to help you with the installation if needed.
Need help choosing your setup? See our buying guide or call us at 09 72 55 18 50.
Water pressure
If the available pressure is too low, a booster pump for home RO systems can be added to the installation.
Cold water connection
The RO system connects to the cold water supply.
Sealing tip: apply at least 10 turns of Teflon tape (supplied with your RO system) to each thread, clockwise.
If you need a tee fitting with a different diameter, email us with your order number and we will send it to you free of charge.
Maintenance
Maintaining your Ecosoft Pure Balance RO system
Maintaining the Ecosoft Pure Balance RO system mainly involves regularly replacing its consumables .
Every 6 months
Sediment and activated carbon pre-filters
- Replace every 6 months.
- They protect the membrane by trapping particles, chlorine, and other impurities.
- Water with a high sediment or chlorine content can shorten their lifespan.
Every 24 months on average
Reverse osmosis membrane
- Replace every 24 months on average.
- It provides fine filtration down to 0.0001 micron.
- Its lifespan can be shorter when the water is very hard or not sufficiently pre-filtered.
Every 12 months
Activated carbon post-filter
- Replace every 12 months.
- It improves the taste and odor of the water after reverse osmosis.
- Prolonged stagnation or highly chlorinated water can reduce its effectiveness more quickly.
Simplified maintenance
Pure Balance maintenance kit
Get the main consumables needed to maintain your Pure Balance RO system in a single kit.
- 1 Ecosoft PP filter for sediment
- 1 GAC filter to reduce chlorine content, among other things
- 1 CTO filter to complete the pre-filtration and protect the membrane
- 1 activated carbon post-filter to improve taste and reduce odors
- 1 Pure Balance cartridge for water remineralization
Good to know: the kit is available with or without a membrane. For routine maintenance, select the "Without membrane" version.
Peace of mind
Warranty up to 5 years
Our RO systems come with a 2-year warranty from Josmose.fr.
An extended 5-year warranty is also available.
Discover the extended warrantyDocuments
Useful documents
Pure Balance data sheet and user manuals
Find the documents you need to review the technical specifications and to install and use your Pure Balance RO system.
Data sheet
View the main technical specifications and performance of the Pure Balance RO system.
Download the data sheetJosmose user manual
Read the French-language manual for installing, commissioning, and using the Pure Balance.
Download the Josmose user manualManufacturer user manual
Also find the manufacturer documentation with instructions for the Pure Balance.
Download the manufacturer user manualFAQ
Frequently asked questions
Everything you need to know about the Pure Balance
Find answers to the most common questions about the package contents, the warranty, and maintenance of the Pure Balance.
What is included with the RO system?
The Pure Balance comes with the main components needed for its installation and operation:
- RO system with booster pump mounted on a metal frame
- RO system pre-filters
- Ecosoft 75 GPD membrane
- Activated carbon post-membrane cartridge
- Pure Balance mineralization cartridge
- Deluxe faucet for purified water
- Pressurized plastic tank, 12 liters, approximately 7 liters usable, with valve
- Water supply adapter, supply valve, and drain clamp
- 4 color-coded tubes to make installation easier
- Service wrenches
- User manual
What warranty does the Pure Balance have?
The Pure Balance comes with a 2-year manufacturer warranty.
An extended 5-year warranty is also available. It covers the pump, the structure, the fittings, and the filter housings, among other parts, under the applicable conditions, excluding consumables subject to normal wear.
What should I do if the water has an unusual odor or taste?
First check the condition of the pre-filters, the post-filter, and the mineralization cartridge, as well as the date of the last maintenance.
If needed, see our guide to cleaning an RO system .
Still have a question?
Find more information in our Frequently Asked Questions about RO systems .
Common myths about water
Professor Henry answers the main questions
Watch several videos about water quality, filtration, and the most common myths.
Tap water is of good quality.
FALSE
A filter pitcher is enough to purify tap water.
FALSE
It is better to drink mineralized water.
FALSE
To be sure, you need to use an RO system.
TRUE
Reverse Osmosis
Benefits of reverse osmosis
High-precision filtration for everyday water
A reverse osmosis system uses the principle of reverse osmosis to reduce many dissolved substances and impurities present in water. This technology produces highly purified water, available directly at the faucet or water dispenser.
Why choose reverse osmosis?
The main benefits
- High-precision filtration: reverse osmosis reduces a wide range of substances present in water.
- Micropollutant reduction: the membrane acts as an especially fine barrier against many dissolved contaminants.
- Better taste and odor: filtration helps reduce chlorine in particular, along with compounds that can affect the organoleptic qualities of water.
- Fewer bottles: having filtered water at home or at work reduces the buying, storing and carrying of bottles.
- Reduced mineral content: reverse osmosis greatly reduces dissolved mineral salts, including those responsible for limescale buildup.
- Less plastic waste: a great way to cut down on single-use bottles.
Reverse osmosis or ultrafiltration? Discover the differences between reverse osmosis and ultrafiltration .
What can reverse osmosis reduce?
Examples of substances and impurities
Depending on the membrane used, the quality of the feed water and the operating conditions, reverse osmosis can help reduce many substances present in water.
Heavy metals Lead Mercury Nitrates Pesticides Dissolved salts Chlorine Fluorides Pharmaceutical residues Micropollutants PFAS
