© 2025 FilterCY
Submit an application
Fill the form and we will contact you as soon as possible
By clicking the Submit button, you agree to our Data Privacy
Find the right water filtration system in 1 minute.
Answer a few quick questions and get personalized recommendations for the best water filtration system for your home — with a discount: a drinking water filter, water softener, or whole-house filtration system.
BWT bestaqua ROC Min Reverse Osmosis System
€
2500
€
BWT bestaqua ROC Min is a compact professional reverse osmosis system with integrated remineralisation, developed for coffee, espresso and other hot beverages where incoming water has particularly high levels of dissolved salts.
The system uses the BWT bestaqua 14 MEMBRANE to remove more than 97% of dissolved salts from the incoming water, making it particularly suitable for locations with raw water conductivity above 1,000 µS/cm or elevated chloride levels.
After reverse osmosis, the practically salt-free water passes through the BWT bestmin PREMIUM mineralisation cartridge. This dedicated treatment stage restores a balanced mineral composition, helping produce suitable water for coffee preparation while protecting professional coffee machines against deposits such as limescale and gypsum. BWT also highlights improved corrosion protection where the incoming water contains high levels of chloride.
With a nominal permeate output of up to 120 litres per hour, salt retention above 97% and permeate yield of approximately 50%, BWT bestaqua ROC Min provides a compact solution for coffee shops, restaurants, hotels and other professional hospitality applications
The system uses the BWT bestaqua 14 MEMBRANE to remove more than 97% of dissolved salts from the incoming water, making it particularly suitable for locations with raw water conductivity above 1,000 µS/cm or elevated chloride levels.
After reverse osmosis, the practically salt-free water passes through the BWT bestmin PREMIUM mineralisation cartridge. This dedicated treatment stage restores a balanced mineral composition, helping produce suitable water for coffee preparation while protecting professional coffee machines against deposits such as limescale and gypsum. BWT also highlights improved corrosion protection where the incoming water contains high levels of chloride.
With a nominal permeate output of up to 120 litres per hour, salt retention above 97% and permeate yield of approximately 50%, BWT bestaqua ROC Min provides a compact solution for coffee shops, restaurants, hotels and other professional hospitality applications
Have a questions? Message us!
Professional Coffee Water
Advanced Water Optimisation for High-Salinity Water
BWT bestaqua ROC Min is a professional reverse osmosis system with integrated remineralisation, developed specifically for coffee and hot beverage applications where the incoming water contains high levels of dissolved salts or chlorides.
01
Designed for High-Salinity Water
The system is particularly suitable for incoming water with conductivity above 1,000 µS/cm, where conventional filtration alone may not provide sufficient control over mineral content.
02
Controlled Remineralisation
After reverse osmosis, practically salt-free water is remineralised through the BWT bestmin PREMIUM cartridge, restoring a controlled and balanced mineral composition.
03
Protection for Coffee Equipment
The combination of reverse osmosis and remineralisation helps protect professional coffee machines against limescale, gypsum deposits and corrosion associated with difficult incoming water conditions.
Technology
How BWT bestaqua ROC Min Works
ROC Min combines high-performance reverse osmosis with a dedicated remineralisation stage to transform highly mineralised incoming water into optimised water for professional coffee and hot beverage preparation.
1
Reverse Osmosis
Incoming drinking water passes through the BWT bestaqua 14 MEMBRANE. More than 97% of dissolved salts are retained, producing practically demineralised permeate.
→
2
Controlled Remineralisation
The RO-treated water then passes through BWT bestmin PREMIUM, which is specifically designed to remineralise practically salt-free water and restore a balanced mineral composition.
→
3
Optimised Beverage Water
The result is controlled, remineralised water designed for professional coffee, espresso, tea and other hot beverages while helping protect valuable equipment.
01 Incoming Water
02 Pre-Filtration
03 Reverse Osmosis
04 Remineralisation
05 Coffee Machine
Technical Data
Technical Specifications
Key technical characteristics of the BWT bestaqua 14 ROC Min professional reverse osmosis and remineralisation system.
| Permeate output | 2 L/min / 120 L/h |
| Salt retention rate | >97% |
| Permeate yield | Approx. 50% |
| Minimum feed water flow | 4.2 L/min / 250 L/h |
| Concentrate flow rate | Approx. 2.0 L/min / 120 L/h |
| Feed water pressure | 1.5–4 bar |
| Feed water temperature | 5–30°C |
| Ambient temperature | 5–40°C |
| Power supply | 230 V / 50 Hz |
| Power consumption | 200 W |
| Standby consumption | <3 W |
| Protection rating | IP54 |
| Device fuse | 1.25 A, slow-blow |
| Device connection | IEC 60320 C13 |
| Power cable | 1.8 m, CEE 7/4 / IEC 60320 C13 |
| Feed water connection | M ¾" |
| Permeate connection | M ⅜" |
| Concentrate connection | John Guest 8 mm |
| External tank connection | John Guest 8 mm |
| Dimensions | 153 × 271 × 505 mm |
| Weight | 17.7 kg |
| RO membrane | BWT bestaqua 14 MEMBRANE |
| Remineralisation cartridge | BWT bestmin PREMIUM M |
| Typical mineralisation cartridge capacity | Up to 10,000 L |
| Final-stage filtration | Integrated activated carbon filtration |
| System control | Smartphone app |
Separate Pre-Filtration Is Recommended
BWT bestaqua ROC Min should be protected by an appropriate upstream pre-filtration stage before the reverse osmosis membrane.
A separate particle and activated-carbon pre-filter can be installed before the ROC Min system to remove sediment, suspended particles and chlorine from the incoming water.
Water Supply → Particle + Carbon Pre-Filter → BWT bestaqua ROC Min → Coffee Machine
* Actual system performance may vary depending on incoming water temperature, pressure, mineral content, operating conditions and system settings.
Applications
Designed for Challenging Water Conditions
BWT bestaqua ROC Min is particularly suitable for professional hospitality applications where high salt levels, chlorides or difficult local water chemistry make conventional coffee-water filtration insufficient.
High-Salinity Water
Designed for locations where incoming water conductivity can exceed 1,000 µS/cm and substantial reduction of dissolved salts is required before beverage preparation.
High Chloride Levels
Particularly suitable where elevated chloride concentrations make corrosion protection an important consideration for professional coffee equipment.
Professional Coffee & Hospitality
Suitable for coffee shops, restaurants, hotels and other professional environments requiring consistent water for espresso, coffee, tea and hot beverages.
Remove what the source water gives you.
Then rebuild the mineral balance your coffee actually needs.
FAQ
Frequently Asked Questions
Key questions about BWT bestaqua ROC Min, high-salinity water and professional water treatment for coffee.
What is BWT bestaqua ROC Min designed for?
+
BWT bestaqua ROC Min is designed for professional coffee, espresso and hot beverage preparation, particularly in areas where the incoming water has a high concentration of dissolved salts or chlorides.
When should ROC Min be used instead of conventional filtration?
+
ROC Min is particularly useful where the incoming water has very high mineralisation. BWT specifically identifies water with conductivity above 1,000 µS/cm as an application for this system. Reverse osmosis allows most dissolved salts to be removed before the water is remineralised.
Why is the water remineralised after reverse osmosis?
+
Reverse osmosis produces water with very low mineral content. The BWT bestmin PREMIUM cartridge then restores a controlled mineral balance, creating water better suited to coffee, espresso, tea and other hot beverages.
What is BWT bestmin PREMIUM?
+
BWT bestmin PREMIUM is a multi-stage mineralisation cartridge specifically developed for practically salt-free water, including water produced by reverse osmosis. It restores minerals in a controlled balance with an emphasis on magnesium and also incorporates activated-carbon filtration.
Is ROC Min suitable for water with high chloride levels?
+
Yes. BWT specifically recommends the ROC Min concept for incoming water with high chloride content. Reverse osmosis substantially reduces dissolved salts and chlorides before controlled remineralisation.
Does BWT bestaqua ROC Min help protect coffee machines?
+
Yes. BWT designed the system to help protect professional coffee machines against mineral deposits such as limescale and gypsum while also reducing corrosion risks associated with difficult source-water chemistry.
Does ROC Min include activated carbon filtration?
+
The BWT bestmin PREMIUM remineralisation cartridge includes activated-carbon filtration as part of its multi-stage treatment process. However, an appropriate upstream pre-filtration stage should still be installed before the reverse osmosis system where required by the incoming water conditions.
What is the production capacity of ROC Min?
+
The system has a nominal permeate capacity of approximately 2 litres per minute, equivalent to 120 litres per hour. Actual production can vary depending on incoming water temperature, pressure and water composition.
How much salt does the reverse osmosis membrane remove?
+
BWT specifies a salt retention rate of more than 97% for the system under nominal operating conditions. This provides a stable low-mineral starting point for subsequent remineralisation.
Can ROC Min be used for tea and other hot beverages?
+
Yes. Although the system is particularly relevant to professional coffee preparation, BWT also specifies it for tea and other hot beverages where controlled water mineralisation is beneficial.
Can the system be controlled from a smartphone?
+
Yes. BWT provides smartphone-based system control through its professional water management application, allowing relevant operating information and system functions to be accessed digitally.
Have a question?
