The resistivity of solvent extract (ROSE) test is a test for the presence and average concentration of soluble ionic contaminants, for example on a printed circuit board (PCB). [1] [2] [3] [4] It was developed in the early 1970s. [5] Some manufacturers use it as part of Six Sigma processes. [3]
Some modern fluxes have low solubility in traditional ROSE solvents such as water and isopropyl alcohol, and therefore require the use of different solvents. [6] [7]
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