Water parameterPAR-000005

Salt rejection

The fraction of dissolved salt kept out of the permeate: one minus the ratio of permeate to feed concentration.

SaveEstablishedScientifically reviewedLevel 3 · Monitoring, measurement & analytics

Unit: %
Typical range: 99.6–99.8% (seawater elements under standard test conditions)

is monitored in

Technology · TEC-000001Reverse osmosisA pressure-driven membrane process that forces water through a dense, semi-permeable membrane against its osmotic pressure, retaining typically more than 99% of dissolved salts.Open

cites

Reference · REF-000001Membrane Technology and Applications (3rd edition)Open

Version history

Version 1 · published 3 Nov 2026