Physical agents Flashcards
1
Q
What are physical agents used in disinfection?
A
Heat
Filtration
Radiation
2
Q
What are the three ways that heating is done?
A
dry heat
moist heat
pasteurization
3
Q
Which heating agent is most effective at killing spores?
A
wet heat
4
Q
What is autoclave?
A
boiling water to 100 degrees
15 pounds of pressure increases heat 120 degrees for 15 to 20 minutes
this results in complete sterilization
denatures proteins
5
Q
What is dry heat used for?
A
glassware
heats up to 120 degrees
6
Q
What is pasteurization?
A
heat treatment of milk to 60 degrees for 30 minutes.will kill most vegetative forms Mycobacterium tuberculosis and salmonella typhio
7
Q
What does filtration remove versus autoclave?
A
removes endotoxins
