Investigations also
showed that the time taken to reach the sterilizing
temperature could be reduced if the oven was allowed to
heat up first, and, if this was done, the temperature variation
in the articles to be sterilized was not so great.
Furthermore, it was shown that the provision of a fan
shortened the time taken to reach sterilizing temperature
and that the forced circulation of air ensured that the
variation was reduced to a minimum (