Rezumat
This paper explains the employment of the electrochemical impedance spectroscopy (EIS) in exam- ining lacquered tinplate used for making tins which were exposed to a mixture of organic acids, found in a natural sour cherry product, then to a solution of lemon acid which is found in a natural product of plum halves, to a solution of apple acid, found in a natural apricot mush product, and to NaCl solution which is in the natural product of sterilized peas. The aim of the research was to obtain the necessary parameters for cal- culating the corrosion rate of lacquered tinplate in tins filled with suitable organic acids used in food indus- try, by simulating the conditions which exist inside a tin, employing the EIS method in determining the de- gree of damage of lacquer under the influence of organic acids.