As inflation boosted the energy, shipment and plastic packaging costs to the highest, it became an urgent necessity for the ROPUR team to respond adequately with a cost saving Highly Concentrated Antiscalant reference. At the same time, as we assess the carbon footprint of our products, our customers need to be confident that they are making the right choice for the environment as well.

Designed for SW & BWRO applications, the RPI-5600 new Concentrated Phosphor Free reference will prevent the carbonate and sulfate scale formation as well as particulates’ accumulation on Reverse Osmosis membranes.

Its originality? To be highly concentrated for:

  • smaller dosing rates,
  • longer shelf-life,
  • cheaper shipment costs per kg versus the RPI-2800
  • optimized PE packaging cost per active substance
  • a much better carbon footprint per kg of substance

On top of that, the RPI-5600, through its bacteriostatic property, helps prevent the formation of biofouling in Seawater RO plants.

The RPI-5600 is the Premium choice for RO applications.



Want to make a trial? Just contact us.


The RPI-5600 is approved for use with cellulose acetate and polyamide membranes. The required dosage level ranges from 1 – 8 ppm as delivered. The dosage is proportional to the feed water flow. The RPI-5600 can be used in its form or diluted with pure water in any ratio. Diluted preparations must be ideally used rapidly, within 48-72 hours after preparation. RPI-5600 is easy to use, safe to handle and safe to store for several months. The pH value of the product is slightly alkaline.

Physical Properties

Appearance: clear, dark yellow liquid

Density: 1.25 - 1.35 g/cm3

pH value: 8.0 – 9.0

Boiling point / boiling range: 100°C

Freezing Point: -6° C

Solubility in water: unlimited

Storage & Handling

RPI-5600 is safe to use and thus is not classified as a hazardous chemical (GGVE/GGVS, ICOA/IATA). Standard regulations and precautions when dealing with chemical products have to be followed.
The storage temperature should be between +5°C and 30°C. The product is supplied in containers suitable for air, road or sea transportation. Given the high concentration in active substances of RPI-5600, it is recommended not to overdose it. Additional information is available inside the safety data sheets.


Polyethylene canister (PE) 23.5 kg net
Standard drum (PE) 240 kg net
IBC Container (PE) 1.100 kg net

Safety Data Sheet


Technical Description