What does a Bresle Patch directly assess?

A Bresle Patch directly assesses soluble salt contamination on a surface. This test involves placing a patch on the surface and using a solution to draw out any soluble salts that may be present. The collected solution is then analyzed to determine the concentration of salts, which is critical because these contaminants can adversely affect the adhesion and performance of coatings.

Recognizing the levels of soluble salts is crucial in many coating applications, especially in environments exposed to marine or industrial pollution, which may leave behind unwanted contaminants. Understanding this is vital for ensuring that the surface is adequately prepared for coating, as high levels of soluble salts can lead to delamination or other failures in the coating system.