Chemical effects on bacteria

[livelaughlove27]

How do chemicals effect bacteria?
What is a method which tests the effectiveness of chemicals on bacterial growth?

[prime]

Some bacteria can grow by fermenting sugars for energy metabolism. You could test different sugars with r.rubrum bacteria for e.g

In terms of killing bacteria, test bleach, disinfectants, antbiotics etc etc.

There is heaps of things to do.

[livelaughlove27]

ok.
Are there any specific tests to observe the effects of the chemicals?

[prime]

-> counting colonies

[lara]

or measure the optical density,provided you keep a control without the substance