The problem of milkstone formation together with its contribution to high bacterial counts is being attacked by a study of physical as well as chemical factors. The condition of the surface of milk equipment would be expected to influence the rate at which milkstone is deposited. The results obtained show that the relatively rough and porous surface of rubber takes on twice as much milkstone as glass, and that little or none is deposited on tygon during the given time exposure.

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Author notes

*MILK PLANT SPECIALTIES CORPORATION, 770 Exchange Street, Rochester 8, New York.

Myron W. Cucci obtained his A. B., 1937, at the University of Rochester; M. S., 1939, Cornell University; 1939–1941, Research Chemist, Lehmkuhl Laboratory, Rochester, New York; 1941–1943, Civilian Inspector of U. S. Army Ordnance Material, New York State Area; 1943–1946, Seventh Medical Laboratory, 3rd U. S. Army European Theater; 1946–1950, Atomic Energy Commission, University of Rochester, Research Associate; 1950–1954, Milk Plant Specialties Corporation, Rochester, New York, Research and Development.