RBM CAPS
The world's first solid, compact capsules
A safe, clean and sustainable alternative to liquid solutions for residential heating and air conditioning systems.
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RBM CAPS
The essentials
Conventional liquid water treatment solutions (tanks, aerosols, metering pumps, etc.) present risks of leaks, overflows, overdosing, unsafe conditions, and complex logistics.
RBM CAPS offers a radically different alternative: solid water treatment.
RBM CAPS
The Solution
World's first range of solid-form water treatment* for residential heating and air conditioning systems.
* Solid, compact and durable inhibitors, sludge removers and biocides.
RBM CAPS
The main benefits
Simple and safe to use
Dose inserted into the filter/device, dissolves gradually
No spills, freezing or overflowing
Space-saving
No more bulky containers
Precise and consistent dosing
Environmentally friendly
Completely plastic-free packaging that is 100% recyclable.
Optimised logistics
Up to 3.5 times less CO₂
RBM CAPS
Solid vs. liquid treatment —
the numbers tell the story
to treat 100 litres of system volume
to treat 100 litres of system volume
to match an entire liquid inhibitor shipment
needed to match one pallet of DR1 capsules
100 litres. Fits in a toolbox.
100 litres. Bulky to store and transport.
100% plastic-free packaging.
from liquid inhibitor alone.
Source: RBM S.p.A. comparative analysis. DR1 solid inhibitor vs equivalent liquid inhibitor treatment per 100L system volume.
RBM CAPS
The range
DR1
Solid Inhibitor
Long-lasting corrosion protection
- NSF CIAS certified
- Suitable for all materials
- 3 × 30g = 100 litres of water
DR2
No-rinse Solid Descaler
Metal cleaning and preparation
- 1 × 20g = 100 litres of water
- Leave in system — no rinsing required
DR3
Rapid Solid Detergent
Enhanced action against mud and deposits
- 2 × 30g = 100 litres of water
- Flush from system within 14 days
DR4
Vast Biocide
Specially formulated for low temperatures
- Heat pumps, underfloor heating
- 1 × 30g = 100 litres of water
RBM CAPS
Quick guide to using RBM CAPS
Dosing reference
| | | | |
|---|---|---|---|---|
| Dose | 3 caps | 1 cap | 2 caps | 1 cap |
| Hydraulic content | 100 litres | 100 litres | 100 litres | 100 litres |
| Radiant surface | 100 m² | 100 m² | 100 m² | 100 m² |
| Number of radiators | 10 | 10 | 10 | — |
Which CAPS for which system?
| Type of System | Treatment Required | CAPS | Notes |
|---|---|---|---|
| New — High TemperatureRadiators / conventional boiler | Cleaning + Protective treatment | DR1+DR2 | DR1 + DR2 can be inserted simultaneously because DR2 does not need to be drained. |
| New — Low TemperatureRadiant / heat pump / UFH | Cleaning + Protective treatment + Biocide | DR1+DR2+DR4 | DR1 + DR2 + DR4 can be added simultaneously because DR2 does not need to be drained. |
| Old / Highly CompromisedHeavy sludge & deposits | Cleaning + Protective treatment + Biocide (radiant) | DR3→ drain DR1+DR4 | Circulate DR3 for a maximum of 14 days. Then drain and refill the system, adding DR1 protector and DR4 biocide for radiant systems. |
RBM CAPS
Certified performance
DR1 NSF CIAS Certification
DR1 is NSF CIAS certified, the only solid corrosion inhibitor with NSF CIAS certification.
This certification guarantees:
- Compatibility with materials (copper, steel, stainless steel, aluminum, multilayer)
- Controlled anti-corrosion efficacy
- Compliance with regulatory requirements
- Absence of harmful substances released into the water
Performance Evaluation of DR2 and DR3
Dispersion Test: Tests performed on an installation consisting of an aluminum boiler and steel radiators (25 years old):
- Dissolution in 15 minutes
- Analysis after 1 hour of circulation
- Checks at 24 hours and 5 days
Result: Significant reduction in sludge, deposits, and corrosion, with progressive stabilization of the system.
RBM CAPS
How to use it with RBM filters
RBM CAPS integrates directly into RBM dosing hardware for safe, simple, and efficient solid chemical treatment — no liquid handling required.
Series 4352
SafeCleaner2-800
Magnetic filter with 800-micron direct filtration cartridge
Multifunction magnetic dirt separator with an 800-micron direct filtration cartridge designed for direct RBM CAPS insertion — safe, in-line solid chemical dosing combined with continuous filtration.
Key features
- 800-micron cartridge accepts RBM CAPS for direct in-line dosing
- Retains magnetic and non-magnetic particles (rust, sand, scale)
- Self-cleaning design with excellent hydraulic characteristics
- Mount vertically, horizontally, or on diagonal pipework
- FF connection ball valves with polymer diverter
- Max operating pressure 4 bar · Operating temperature 0–90 °C
Available sizes
| Code | Connection |
|---|---|
| 43520500 | 3/4" (20mm) |
Direct filtration cartridge suitable for dosing solid chemicals
Series 4318
DosaClean
Dedicated solid chemical dosing point
DosaClean is a dosing point for treating systems with RBM CAPS solid chemical conditioners. Compact cartridge-holder design for precise, spill-free solid dosing.
Key features
- Plastic polymer cartridge holder and diverter
- Elastomer hydraulic seals
- Threaded FF connections UNI-EN-ISO 228
- Max operating pressure 4 bar
- Working temperature 0 to +90 °C
- Purpose-built dosing point for RBM CAPS solid conditioners
Available sizes
| Code | Connection | Kv |
|---|---|---|
| 43180500 | G 3/4" FF | 6.81 m³/h |
| 43180600 | G 1" FF | 7.51 m³/h |
| 43180700 | G 1¼" FF | 7.51 m³/h |
| 43182200 | Ø 22 mm | 6.81 m³/h |
| 43182800 | Ø 28 mm | 7.51 m³/h |
Solid chemical dispenser — insert RBM CAPS directly
RBM CAPS
System testing and analysis
Verify correct inhibitor presence in the system water at start-up and during periodic maintenance checks.
Series 4395 · Code 43950002
RBM Protect Dosing Test Analysis Kit
Analysis in seconds to determine the required dosage
Rapid colorimetric test kit to verify the correct presence of protective treatment in air conditioning and heating circuit water. Suitable for system logbook completion at first start-up and for subsequent periodic checks.
Key features
- Double-concentration colorimetric test (Series 4395)
- Results in seconds — confirms correct inhibitor presence
- Suitable for first start-up and periodic system checks
- Supports correct completion of the system logbook
- Complete portable kit in carry case
- Approximately 25 tests per pack
Kit contents
- Carry case
- Instruction sheet
- 20 ml test tube
- 2 × 15 ml bottles of reagent
- 1 × 25 ml bottle of control liquid
RBM CAPS
Ready to get started?
Request a quote for pricing and documentation, or get in touch with our support team for dosing guidance.