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Ozone—Caution!

Department of Dairy, Food Technology Program, Michigan State University, Lansing

ABSTRACT

Within recent years ozone generators have been installed in cheese-curing rooms and in food-storage lockers in an effort to retard contamination by mold. A report appearing in a recent issue of the Medical News Letter, 30 (9), 1957, pronounces ozone to be a public health hazard. Although no human fatalities have been reported as a result of exposure to ozone, at concentrations in excess of 0.1 p.p.m. by volume definite symptomatic effects are evident, the most pronounced effects being pulmonary edema and hemorrhage.

The hazards involved are considered to outweigh the value of an ozonizer as a deodorizer or gemicidal agent in confined working areas. Where ozonizers are installed, warning signs should be posted and personnel cautioned not to occupy these lockers longer than is necessary.