Microorganisms are always around and ready to contaminate your carefully grown cultures. In this practical we will determine what common airborne contaminents look like.
- 1 Peptone agar (PA) plate, favourable to bacteria
- 1 Malt agar (MA) plate, favourable to yeast and fungi
In case you have no clue how to make Agar plates, please take a look at the Microbiology at Home manual of Dr. Simon Park. You will need a pressure cooker to sterilize the mediums.
- Find an interesting spot in the building.
- Remove the lid from the plates and leave the plates for 30 minutes.
- Collect the plates.
- Incubate at 30° C for 24h.
- Inspect your plates and look at them under the microscope.
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