conclusion in duplicating Pasteur's experiment was, the soup boiled in
the glass flask for at least one minute with curved tubing did not allow
bacteria to enter the flask and allow for spoilage. In the other
two flasks the soup which was not boiled and had a vertical glass tube
piece out of the stopper, spoiled forming a scaly scum on the surface of
the soup and had a foul odor. The second soup flask which was also
not boiled, but contained a curved, glass tube top with a piece of cotton
inserted in the tubing also formed a foul smell and the soup became cloudy.
In conclusion, we found boiling the soup and having a curved, glass tube
top kept the soup fresher.