The results of our experiment are as shown below:
Cleaning agent 1( Dettol)
Cleaning agent 2( Mama)
Cleaning agent 3(Clorox)
Cleaning agent 4(Life bouy)
Without cleaning agent
Ecoli disk (1)
Ecoli disk (2)
- Compare all the values written on the table
- Using the number of colonies in each petri dish of antibacterial agent, express it as a percentage of the number of colonies in the control petri dish.
- Using the number of colonies found in each petri dish, plot two bar graphs (Number of colonies and percentage of colonies) to analyse the data. The lowest “bar” is the most efficient antibacterial agent out of all the agents chosen.