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Unit 21
Biomedical Science Techniques
Investigating Antimicrobials
Can you define/describe the following?
Antiseptic
Antibiotic
Sanitizer
Disinfectant
Sterile
Aseptic
Antimicrobials
Sanitizer
Disinfectant
Sterilizer
Effective against
•99.9%bacteria
•100%bacteria
•fungi
•certain viruses
•100%bacteria
•fungi
•viruses
•spores
Time required for
effectiveness
30 seconds - 5
minutes
Generally 10
minutes
Variable
Locations / Uses
Household surfaces
Food contact
surfaces
Household surfaces
Medical settings
Medical instruments
Research supplies
Effect
Limited microbicide
Microbicide
Irreversible
microbistat
Microbicide
Formulations
Sprays, liquids, gels,
granules, etc.
Sprays, liquids, gels,
granules, etc.
Liquid, gases
Testing Antibiotics
Your Investigation
• You are going to carry out an investigation into
the effectiveness of various household
disinfectants / cleaning products.
• You will be looking at how well the inhibit the
growth of bacteria.
• http://www.youtube.com/watch?v=cuCSELaQ
_Go
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