Strategies for control of microbes Flashcards
1
Q
what is seterilisation?
A
removing or killing all viable organisms and spores
2
Q
features of moist heat sterilisation?
A
- most effective and efficient
- boiling (100 degrees) kills some organisms, but not all
3
Q
temperature/time for moist heat?
A
- 15 mins at 121 degrees
- 3.5 mins at 134 degree
4
Q
features of dry heat sterilisation?
A
- kills microorganisms through oxidation
- not applicable to all types of material due to high temp
5
Q
temperature/time for dry heat?
A
- 1 hour at 170 degrees
- 2 hours at 160 degrees
6
Q
types of radiation?
A
- uv light
- ionising radiation
7
Q
what is filtration?
A
physical removal of microorganisms - especially useful for heat sensitive liquids or gases
8
Q
what is disinfection and antisepsis?
A
involves removing or killing most viable organisms
