This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 11-8-10
Section RT Lab: LR10 Antiseptics and Disinfectants
Objective: Examine the efficacy of various antiseptics/disinfectants
S. aureus E. coli Ps. aeruginosa Phenol 7 mm 12 mm 7 mm Purel hand sanitizer 1 mm 0 0 Lemon juice 10 mm 0 0 Laboratory hand soap 13 mm 0 0 CAB disinfectant 30 mm 14 mm 9 mm Gram Iodine 8 mm 7 mm 8 mm Silver Nitrate – AgNO3 9 mm 10 mm 8 mm Hydrogen peroxide 41 mm 30 mm 27 mm Conclusion: Phenol worked well as compared to other proven disinfectants such as hydrogen peroxide and
Gram’s Iodine, though hydrogen peroxide, followed by Silver nitrate and the CAB disinfectant were the
most effective of all substance tested. Hydrogen peroxide resulted in total clearing. Many store-bought and
home-remedy substances only affected S. aureus but were completely usueless against E. coli and Ps.
Discussion: I am surprised by the lack of effectiveness of the hand sanitizer, since people use those types of
products religiously and in reality they don’t have any effect on E. coli or the pseudomonas. The proven
disinfectants and sanitizers clear E. coli, which is reassuring, however I’m still questioning what would be
most effective for day-to-day use or for hand sanitizing when considering the convenience factor of what’s
View Full Document
This note was uploaded on 08/02/2011 for the course MICRO 233 taught by Professor Diaz during the Fall '10 term at City Colleges of Chicago.
- Fall '10