01
Scale
Dissolved minerals such as calcium carbonate crystallise over time, forming hard deposits that reduce flow and heat transfer.
See cases →Physical water treatment
More chemicals aren't the answer. Physics is.
Cut OPEX with MERUS: physical protection for your water system. Less maintenance, fewer shutdowns, fewer hidden costs.
Merus Ring
30+
years of Merus GmbH
45+
Countries represented
15K+
Installations
3-6
months to visible results
Problems we solve
Three enemies of your water system
Minerals, rust and biology reinforce each other. MERUS weakens the bonds that lock them onto surfaces.
02
Corrosion
Metal breakdown caused by oxygen and moisture. It shows up as rust or pitting that shortens equipment life.
See cases →
03
Biofilm
Organic build-up of bacteria and algae that clogs water systems, especially in cooling towers and damp environments.
See cases →How Merus works
Physical oscillation
No chemicals
No energy
No pipe cutting
01
Installation
- External clamp-on ring on the existing pipe, with no cutting, no welding and no shutdown.
- Installed in minutes. Any pipe material or diameter.
- 100% passive from day one: no electricity, no additives, no maintenance.
02
Effect
- The oscillations pass through the pipe wall and travel with the flow.
- The oscillations increase the solubility of minerals such as calcium and magnesium dissolved in the water.
- No chemical reaction: physical interference.
03
Response
- These new oscillations interfere with the natural oscillations of the minerals dissolved in the water.
- Existing scale softens and breaks away. New deposits stop forming.
- Biofilm loses its grip: with no mineral surfaces, it cannot colonise.
Mechanism: physical oscillation with results across multiple sectors. Empirical, not theoretical
Proven results
Real installations. Measurable improvements.
Documented cases in offshore, marine, refining and HVAC.
Marine biofouling: Seawater riser, Qatar
Northern offshore drilling, Qatar · Merus Chain on the riser pipe
| Parameter | Before | After: 6 months |
|---|---|---|
| Pipe | Progressive blockage | Clear section for longer |
| Maintenance interval | 6 months | 12 months extended 2× |
| Treatment | Chemical | Physical |
Merus Chain: external clamp-on on the riser.
Sea growth in a sea water deep well riser that reduces flow and consequently disables heat transfer in the heat exchangers.
Marine growth broke away and was carried off by the flow. Pressure and flow stabilised; cooling recovered.
Internal corrosion: Seawater pipe
Severe corrosion and progressive build-up that reduced flow.
| Parameter | Before | After: 9 months |
|---|---|---|
| Pipe | Severe internal corrosion | Corrosion stabilized |
| Maintenance interval | 9 months | 21 months extended 2.5× |
| Treatment | Chemical | Physical |
Merus Ring clamp-on on the seawater pipe
Severe internal corrosion accelerating wall degradation. Progressive build-up and risk of unplanned downtime.
Progressive removal of corrosion. The ring stopped new deposits and cleaned the walls.
Biofouling: Seawater intake line
Patrol vessel, Netherlands · Merus Ring on the seawater intake line
| Parameter | Before | After: 12 months |
|---|---|---|
| Pipe | Severe biofouling blockage | Section practically clear |
| Maintenance interval | 12 months | 36 months extended 3× |
| Treatment | Chemical | Physical |
Merus Ring mounted on the intake line, external clamp-on in the engine room.
Without Merus, marine biofouling typically blocks the seawater intake line within about 12 months.
With Merus Ring installed, the line stayed largely clear. Marine growth was inhibited and carried off by the flow.
Scale in boiler and heat exchanger tubes
Steam boiler cooling system, marine / maritime sector.
| Parameter | Before | After: 4 months |
|---|---|---|
| Pipe | Scale reducing flow and heat transfer | Flow and heat transfer restored |
| Maintenance interval | 4 months | 12 months extended 3× |
| Treatment | Chemical | Physical |
Merus Ring on the steam boiler cooling system, external clamp-on.
Severe scale and corrosion inside the exchanger tubes. Continuous treatment was in place, yet deposits kept reducing heat transfer and flow.
Deposits dissolved and surfaces came out clean, with no mechanical work. The ring mitigated corrosion and prevented rust build-up in the tubes.
Cooling system
Biological fouling and corrosion in dead zones of the circuit.
| Parameter | Before | After: 10 months |
|---|---|---|
| Pipe | Biofilm and corrosion in dead zones | Clear flow, corrosion stabilized |
| Maintenance interval | 10 months | 25 months extended 2.5× |
| Treatment | Chemical | Physical |
Merus Ring in the cooling circuit.
Biofouling and corrosion in dead zones that obstructed flow.
Biofilm disappeared with no extra mechanical cleaning. Corrosion stabilised: from >10 mpy to <1.5 mpy.
Scale in the fresh water generator
Holland America Line, MS Rotterdam
| Parameter | Before | After: 9 months |
|---|---|---|
| Pipe | Persistent scaling despite chemical treatment | Scale softens, easy removal |
| Maintenance interval | 4 months | 16 months extended 4× |
| Treatment | Chemical | Physical |
Merus Ring clamp-on on the fresh water generator's heat exchanger.
Scale on the exchanger plates persisted despite continuous chemical treatment. Manual cleaning every 3 months.
Scale on the evaporator plates softened enough to be removed by hand.
It doesn't replace your current treatment. It reduces it.
Cleaner operation. Lower costs.
No chemicals
Eliminate or reduce treatment additives. Less waste, less risk and lower consumable costs.
No maintenance
No filters to change, no dosing pumps. The ring works continuously once installed.
No electricity
Zero energy consumption. Ideal for plants, hotels, marine and remote sites.
Comparison
Same results.
Without the chemical cost.
Five fronts where conventional treatment holds your plant back, and where Merus wins.
Criterion
Conventional methods Ongoing cost
MERUS Ring / Chain One-time cost
Chemicals
ConventionalContinuous dosing of antiscalant and biocide
MERUSOscillation treatment, nothing is added to the water
Coverage
ConventionalChlorination only reaches the dosing point
MERUSThe effect travels with the flow, including dead legs
Shutdowns
ConventionalScheduled CIP and pigging, production stopped
MERUSContinuous passive protection, far fewer cleaning shutdowns
Environment
ConventionalComplicated and costly water disposal. Environmental risk
MERUSNothing is added, nothing is disturbed
OPEX
ConventionalOngoing purchase and logistics of consumables
MERUSNo consumables: once installed, the ring works quietly for years
Try it for 90 days. No chemicals. No initial purchase commitment.
Request a quoteFive reasons to use Merus
Decision criteria that matter on site: downtime, OPEX and evidence.
01
Installed in minutes
Without cutting pipes or stopping processes
02
Zero inputs
No chemicals, no electricity, no maintenance
03
Passive operation
Once installed, the ring works quietly for years
04
Visible results
Visual inspection and water parameters within weeks
05
Local support
Technical team in Spain and Portugal
MERUS solutions
Ring and Chain: the same physical oscillation principle, two formats by diameter and environment.
Merus RingClamp-on, ½" to 24"
Technical specifications
- Installation: External clamp-on ring. No pipe cutting and no stopping the system.
- Maintenance: 100% passive. No electricity and no moving parts.
- Operational result: Stabilises differential pressure and cuts energy consumption (kWh). Significantly reduces the frequency of chemical CIP cycles.
- System integration: Optimised for RO feed lines, high-pressure pumps and heat exchangers.
- Dimensions: ½" to 24"
Merus ChainSubsea · modular diameter
Technical specifications
- Installation: External subsea chain, unlimited scalability. No pipe cutting and no operational shutdown.
- Maintenance: 100% passive. No electricity and no moving parts.
- Operational result: Stops marine growth at the source while inhibiting scale and corrosion at the same time.
- System integration: Main application: seawater intakes and RO feed systems.
- Modular scalability: The link design allows unlimited scalability. Adapt the diameter by adding blocks to the chain.
A 90-day pilot at your plant
Tell us about your water system. We'll propose Ring or Chain and a measurable follow-up plan.
Spain +34 666 691 585
Portugal +351 912 736 920