With cases of food contamination and food poisoning on the rise, many people ask how clean their kitchen is. This experiment lets you examine the microbial populations of your kitchen and identify possible sources of contamination. You may find the results reassuring or frightening, depending on what grows on your plates.
Procedure Use the marker to divide the petri plates in half.
Label each side of the plate with name of the object sampled. Interpretation of the Results After incubation, look at your plates. Remember that you will probably have both bacteria and fungi growing on the plates. Look at colony morphology. Count both the number of colonies and the number of different types.