Abstract
IN the course of investigations carried out on the influence of bacteria and fungi on flour kept under storage conditions, considerable difficulties were encountered by repeated contamination of the Petri dishes used for spore counts by spreaders such as Bacillus dendroides. Fig. 1 shows an example of the type of contamination that was obtained. The presence of these spreaders necessarily vitiates counts on such contaminated plates.
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BARTON-WRIGHT, E., CUTLER, D. & CRUMP, L. Contamination in Petri Dish Boxes. Nature 137, 110–111 (1936). https://doi.org/10.1038/137110b0
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DOI: https://doi.org/10.1038/137110b0
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