Aseptic techniques Flashcards
1
Q
Why open the Petri dish as little as possible?
A
To prevent bacteria in the dish getting out and bacteria in the air getting in to contaminate the plate
2
Q
Why use a sterile pipette?
A
To maintain a pure culture of bacteria
3
Q
Why use a Bunsen burner to flame the inoculating loop, bottle of the neck and the spreader?
A
To maintain a pure culture of bacteria
4
Q
Why wash hands with soap?
A
To prevent contamination from bacteria on hands
5
Q
Why disinfect the surfaces?
A
To kill bacteria on surfaces so contamination doesn’t occur
6
Q
Why work close to a Bunsen burner flame?
A
To allow for upward convection currents to sterilise air
