The RPI-2800 is the Phosphor Free reference designed to prevent the carbonate and sulphate scale formation in Reverse Osmosis systems. The reference also reduces the Bio-Fouling growth tendency observed in Seawater RO plants, through a bacteriostatic mechanism.

The RPI-2800 is the Premium choice for SWRO applications.


The RPI-2800 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-2800 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-2800 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: 1.14 – 1.16 g/cm3

pH value: 7.0 – 9.0

Boiling point / boiling range: 100°C

Freezing Point: -6° C

Solubility in water: unlimited

Storage & Handling

RPI-2800 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-2800, 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