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Dow Introduces ROSA 9

When designing an RO or NF water treatment system, accuracy is critical to ensure you get the most from your system.

Due to ever increasing system demands, ROSA (Reverse Osmosis System Analysis) design software continues to evolve and grow to enable complex designs to be carried out which will ultimately provide the best solution to meet the required needs. The latest version ROSA 9.0.0 is now available to aid in system design using Dow FilmTec membrane elements, and now includes :

Improved modelling for brackish water elements, adding feed TDS dependency

Includes new ECO products

System performance is usually characterised by two operation parameters which are product flow and salt rejection. A given feed water analysis should be available to that feed pressure, temperature and recovery can be referenced. Depending upon the system, the goal is to minimise feed pressure and membrane costs whilst maximising permeate quality and recovery.

To download the latest version of please click here.

Alternatively, if you require further information or assistance with membrane designs, please contact us with the details at

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