Bacterial Growth on a Dish Sponge and Rag

Petri Petrie Dish · Free vector graphic on Pixabay.

Experiment/Hypothesis. The purpose of the experiment was to see which dish cleaner (sponge and rag) would have the most growth with our two chosen bacteria. E. coli and Salmonella. We hypothesized the we will observe the most growth on the soft side of the sponge, followed by the rag and the rough side of the sponge..

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P value was 0.00054. Table. E. coli Rough Soft Rag (uncountable) Plate 1 ~2,408 0 ~11,000 2 ~2,060 1 ~8,000 3 ~1,950 1 ~12,000.

Materials Used. [image] Petri Dish outline. Sponge (soft and rough side) Dish rag Two bacteria (10mL) – E. coli and Salmonella 18 SMA plates Swabs Pipettes Spinner/Vortex 6 Tubes Plate spreader.