As mentioned earlier, this experiement investigates “How effective are antimicrobial substances; natural compared to synthetic at preventing the bacterial growth of E.coli?” Despite the numerous trials conducted for accuracy, further experiment would need to be done in order to completely determine the effectiveness of both natural and synthetic antimicrobial substances. The hypothesis of this experiment stated that the synthetic antimicrobial substance used: Dettol was much more effective in resisting the growth of E.coli. This can be concluded from the results as the highest zone of protection measurement was: 20mm which is provided by Dettol. The lowest zone of protection was from the salt: 1mm. But this may be due the fact it was dissolved
