RPI-6000 is a Super Concentrated Solution to prevent “Calcium Sulfate” crystals formation in BWRO & SWRO systems. RPI-6000 is designed for water with an extremely high Calcium/Magnesium Sulfate content (up to 15,000 mg/l). Additionally, the RPI-6000 has also the capacity to prevents Calcium Carbonate scaling.


RPI-6000 is approved for use with all polyamide membranes. The required dosage level ranges from 1 – 5 ppm as delivered. The dosage is proportional to the feed water flow. RPI-6000 can be diluted with water in any ratio. However, it is recommended to inject the RPI-6000 undiluted or as a <10% solution.  Diluted solutions must be used within 48 hours of preparation. RPI-6000 is easy to use, safe to handle and safe to store for several months. The shelf-life for sealed goods is superior to two years of time.

Physical Properties

Appearance: clear, yellowish liquid

Density: 1.27 – 1.31 g/cm3

pH value: 6.0 – 8.0

Boiling point / boiling range: 105°C – 108°C

Freezing Point: - 15°C

Solubility in water: unlimited

Storage & Handling

RPI-6000 is not a hazardous chemical (GGVE/GGVS, ICOA/IATA). Standard regulations and precautions when dealing with chemical products must be followed. The storage and transport temperature should be between +2°C and 35°C. The product is supplied in containers suitable for air or sea transportation. The safety data sheet contains more information.


Polyethylene canister (PE) 23.5 kg net
Standard drum (PE) 270 kg net
IBC Container (PE) 1,200 kg net

Safety Data Sheet


Technical Description