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BWT BESTBARISTA ROC COFFEE Reverse Osmosis System
€
500
€
BWT BESTBARISTA ROC COFFEE is a professional reverse osmosis and remineralisation system developed specifically for coffee preparation.
The system first removes more than 97% of dissolved salts from the incoming water using reverse osmosis. The purified water is then passed through a dedicated BWT bestbarista Coffee cartridge, which restores a controlled mineral composition with an emphasis on magnesium and silicate.
This two-stage approach helps reduce variations caused by local water hardness and mineral content, creating more consistent water conditions for coffee extraction. It also significantly reduces the amount of hardness-forming minerals entering professional coffee equipment.
With a nominal output of up to 120 litres per hour, BESTBARISTA ROC COFFEE is suitable for specialty coffee shops, restaurants, hotels and other professional applications where both coffee quality and equipment protection are important.
A separate particle and activated-carbon pre-filtration stage is recommended before the reverse osmosis system and is installed separately.
The system first removes more than 97% of dissolved salts from the incoming water using reverse osmosis. The purified water is then passed through a dedicated BWT bestbarista Coffee cartridge, which restores a controlled mineral composition with an emphasis on magnesium and silicate.
This two-stage approach helps reduce variations caused by local water hardness and mineral content, creating more consistent water conditions for coffee extraction. It also significantly reduces the amount of hardness-forming minerals entering professional coffee equipment.
With a nominal output of up to 120 litres per hour, BESTBARISTA ROC COFFEE is suitable for specialty coffee shops, restaurants, hotels and other professional applications where both coffee quality and equipment protection are important.
A separate particle and activated-carbon pre-filtration stage is recommended before the reverse osmosis system and is installed separately.
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Professional Coffee Water
Professional Water Optimisation for Better Coffee
BWT BESTBARISTA ROC COFFEE is designed for professional coffee preparation where consistent water quality is essential. The system combines reverse osmosis with controlled remineralisation to create water specifically optimised for coffee extraction.
01
Consistent Coffee Quality
Reverse osmosis reduces the influence of varying local water hardness and mineral composition, helping maintain more consistent brewing conditions.
02
Optimised Mineralisation
After reverse osmosis, the water is remineralised using a dedicated BWT bestbarista Coffee cartridge with a mineral composition developed specifically for coffee.
03
Equipment Protection
Reverse osmosis significantly reduces the mineral load entering the coffee machine while controlled remineralisation provides suitable water for professional coffee preparation.
Technology
How BWT BESTBARISTA ROC COFFEE Works
Instead of simply filtering tap water, the system first creates highly demineralised water and then rebuilds its mineral composition specifically for coffee preparation.
1
Reverse Osmosis
The BWT reverse-osmosis membrane removes more than 97% of dissolved salts from the incoming water, greatly reducing the influence of the original water composition.
→
2
Controlled Remineralisation
The permeate then passes through the BWT bestbarista Coffee cartridge, which adds a defined mineral composition with an emphasis on magnesium and silicate.
→
3
Water Optimised for Coffee
The result is controlled, remineralised water designed to provide more consistent conditions for coffee extraction and professional espresso preparation.
01 Incoming Water
02 Pre-Filtration
03 Reverse Osmosis
04 Remineralisation
05 Coffee Machine
Technical Data
Technical Specifications
Key technical characteristics of the BWT BESTBARISTA 14 ROC COFFEE reverse-osmosis and remineralisation system.
| Permeate output | 2 L/min / 120 L/h |
| Salt rejection | >97% |
| Water Conversion Factor (WCF) | Approx. 50% |
| Minimum feed water flow | 4.2 L/min / 250 L/h |
| Nominal output flow | 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 | 220–240 V / 50–60 Hz / 10 A |
| Power consumption | 200 W |
| Standby consumption | <3 W |
| Protection rating | IP21 |
| Feed water connection | M ¾" |
| Permeate connection | M ⅜" |
| Concentrate connection | John Guest 8 mm |
| External tank connection | John Guest 8 mm |
| Dimensions (W × D × H) | 277 × 297 × 505 mm |
| Weight | 17.7 kg |
| RO membrane | BWT bestaqua 14 Membrane |
| Remineralisation cartridge | BWT bestbarista 14 Coffee |
| Remineralisation cartridge nominal flow | 120 L/h |
| Controls | Electronic control with Bluetooth interface |
Separate Pre-Filtration Is Required
BWT BESTBARISTA ROC COFFEE does not replace the upstream sediment and activated-carbon filtration stage.
BWT recommends pre-treatment of the incoming water using a particle and activated-carbon filter, such as BWT besttaste. The pre-filtration system is installed separately before the reverse-osmosis unit.
Water Supply → Particle + Carbon Filter → BESTBARISTA ROC COFFEE → Coffee Machine
* Actual system performance may vary depending on feed-water temperature, pressure, water composition and operating conditions.
Applications
Designed Specifically for Professional Coffee
BESTBARISTA ROC COFFEE is intended for professional applications where both water consistency and coffee quality matter.
Specialty Coffee Shops
For cafés that require predictable water composition and repeatable extraction across different coffees and brewing parameters.
Restaurants & Hotels
For professional hospitality environments where coffee quality needs to remain consistent despite variations in local tap water.
Professional Espresso Machines
For installations where water quality affects both the sensory result in the cup and the long-term operation of valuable commercial coffee equipment.
Not simply purified water.
Water engineered specifically for coffee.
FAQ
Frequently Asked Questions
Key questions about using BWT BESTBARISTA ROC COFFEE in professional coffee applications.
What is BWT BESTBARISTA ROC COFFEE designed for?
+
The system is designed specifically for professional coffee preparation. It combines reverse osmosis with controlled remineralisation to produce water with a defined mineral composition suitable for espresso and other coffee beverages.
Is this simply a reverse osmosis system?
+
No. Reverse osmosis is only the first part of the process. After most dissolved minerals have been removed, the water passes through the BWT bestbarista Coffee cartridge where it is remineralised with a controlled mineral composition developed specifically for coffee preparation.
Why is the water remineralised after reverse osmosis?
+
Almost completely demineralised RO water is not the objective of this system. BESTBARISTA ROC COFFEE uses reverse osmosis to create a consistent starting point and then adds a defined mineral composition with an emphasis on magnesium and silicate.
Why does water quality matter for coffee?
+
Water makes up the majority of a cup of coffee and its mineral composition influences extraction. Changes in hardness, alkalinity and overall mineralisation can therefore change how the same coffee tastes and behaves during brewing.
Can BESTBARISTA ROC COFFEE be used with hard water?
+
Yes. One of the key advantages of reverse osmosis is that it greatly reduces the influence of the original mineral composition of the incoming water. Correct system sizing and appropriate feed-water pre-treatment remain important.
Does the unit include a sediment and carbon pre-filter?
+
The upstream sediment and activated-carbon filtration stage is installed separately. BWT recommends feed-water pre-treatment using a particle and activated-carbon filter, such as BWT besttaste, before the BESTBARISTA ROC COFFEE system.
What is the production capacity of the system?
+
The nominal permeate output is approximately 2 litres per minute, or 120 litres per hour. Actual output can vary depending on incoming water temperature, pressure, water composition and operating conditions.
Does the system reduce the risk of limescale?
+
Reverse osmosis removes more than 97% of dissolved salts, significantly reducing the amount of hardness-forming minerals entering the system. The water is then remineralised in a controlled way specifically for coffee preparation.
Can the system be monitored or configured digitally?
+
The system includes electronic control and a Bluetooth interface for access to relevant operating and system parameters.
How often does the system require maintenance?
+
Maintenance intervals depend on water quality, consumption and operating conditions. The RO membrane, remineralisation cartridge and separate pre-filtration system should be serviced according to BWT recommendations and actual system usage.
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