ID#: 8532
Caption:
This historic 1922 photograph showed laboratory Petri dishes, which contained the results of milk sedimentation tests. The results revealed that dirty milk had been adulterated at some point, during its production process. This was one of a series of instructional images used by the Minnesota Board of Health, in order to train public health workers. The purpose of these images, and the training, was focused on protecting food supplies from bacterial contamination. The accompanying description also stated that the image was labeled as File plate no. 120.
High Resolution: Click here for hi-resolution image (6.74 MB)
Content Provider(s): CDC/ Minnesota Department of Health, R.N. Barr Library; Librarians Melissa Rethlefsen and Marie Jones
Creation Date: 1922
Photo Credit:
Links: Minnesota Health Department
Minnesota Health Department; R.N. Barr Library
Categories:
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Copyright Restrictions: Permission is not required for public domain images, however, these images are provided by CDC and are available for personal, professional, and educational use with appropriate attribution. Redistribution must credit CDC and, where known, the individual photographer, and identify the CDC website as the free source. For additional terms see Use of Agency Materials | Other | CDC