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A comparison of two systems of cleaning milking machinery

Authors: W. I. Scott. W. G. Whittlestone and P. Lutz


The original Ruakura alternating acid and alkali cleaning system has been compared with a system using the same type of alkali seven days a week and including a pre-milking rinse with a phosphoric acid iodophor. The latter system was shown to be more effective in the prevention of the build-up of milkstone both on completely and partley tinned copper surfaces. The rate of corrosion was not significantly greater with the iodophor-alkali system than with the Ruakura system. The rate of corrosion of tine and the rate at which milkstone deposits build up on it are both sharply increased when the tin surface is electrically coupled to a bare copper surface.

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