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We are nearly
ready to collect our bacteria. We have agar on which bacteria can
grow, suitable nutrients and a bug-friendly environment but there
is one last step before catching the bugs themselves: all equipment
that could be in direct contact with the bacteria or the media has
to be sterilized.
The best methods
of sterilization are autoclaving
and baking
in an oven. Metal equipment such as tweezers, wire loops and
spoons are sterilized before use by dipping them into 70% ethanol
(or powerful rum!) and setting them alight.
Finally, it's
time to catch some bacteria.
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