Anticipated levels of soluble salts remaining on rusty steel prior to painting

The presence of water-soluble contaminants (particularly sulphates and chlo rides) at the steel/paint interface is known to have detrimental effects on the performance of most paint systems. in this paper an assessment is pres ented of the residual contamination left on rusty steel after brushing and once the steel had been exposed to a broad range of atmospheric conditions. Also on attempt has been made to relate that residual contamination with t he aggresiveness of the atmosphere according to international Standards Org anization Standard (ISO 9223).