making broth:

1. weigh in mass of nb for 1l
2. weigh in % of glu
3. put in 1000ml water
4. autoclave
5. 50ml bacteria

bacteria broth making:

1. 50ml broth
2. ? loops of bacteria
3. incubate at 30degC overnight

cathode solution: bacteria. electrode: carbon rod
anode solution: copper(II) sulfate. electrode: copper piece.