can someone please explain to me what oyu need to know for biog unit 7 aqa b
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aseptic techniques watch
- Thread Starter
- 23-06-2005 17:12
- 23-06-2005 22:04
Work near a bunsen burner for updraught. The bunsen pushes air upwards so spores don't fall into petri dish.
Flame the pipette- causing air to expand out of the pipette therefore bacteria not drawn in.
Keep petri dish at 45°. To prevent bacterial and fungal spores from falling into dish.
Hope this helps.