This International Standard specifies a test method for the determination of the resistance of enamels used in chemical process technology to acid and neutral materials, as well as to actual process mixtures in closed systems at temperatures above their boiling point.

It is also applicable to the determination of resistance to mildly alkaline fluids provided that the material of the test equipment be suitable for such a test (see 4.1.2).

This International Standard specifies the basic parameters for corrosion tests to ensure adequate repeatability and reproducibility of results. The corrosion rate is calculated from the loss in mass per unit area per unit time, determined according to this test method.