Increased Aeration
By constantly spinning the sample tubes, the liquid is allowed far more contact with air. This increases the percentage of oxygen within the liquid.
Equal Solubility
Any substances added to the culture, such as growth medium or an experimental chemical, will be equally diffused through the solution, resulting in equal exposure cell to cell.
Shorter Growth Period
A shorter growth period means that bacterial culture is ready for an experiment sooner, saving precious time. It also means there is more bacteria in the culture, allowing one culture to spread farther in experiments.
More Accurate Experiments
Because each sample tube in a spinning incubator is exposed to the same conditions, it allows for more reliable test results.
Warning
If you leave the cultures in too long, they will no longer be usable.