What does a chloride test evaluate?

A chloride test specifically evaluates contamination levels on a surface prior to painting. Chloride ions can cause corrosion in metals, which makes it crucial to determine their presence. If a surface has high levels of chlorides, any paint applied may not adhere properly and could lead to premature failure of the coating and increased corrosion risk.

This test helps ensure that surfaces, particularly in marine environments where chlorides from saltwater are prevalent, are adequately cleaned and prepared for painting. By measuring these contamination levels, inspectors can make informed decisions about surface preparation and the suitability of the substrate for coating application.