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Water contamination test procedure, 1931

Water contamination test procedure, 1931

C022/2760

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Credit

CDC / SCIENCE PHOTO LIBRARY CDC / SCIENCE PHOTO LIBRARY

Caption

Water contamination test procedure. Left to right: removing the water sample from the bottle; placing the sample onto a culture plate; inoculating broth tubes with water samples. This was one of a series of instructional images used by the Minnesota Board of Health, USA, to train state public health workers. The purpose of the images and the associated training was focused on keeping potable water supplies free of harmful bacteria in order to prevent disease.

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