storing agar plates
Posted 24 April 2009 - 06:23 AM
why are agar plates stored upside down?
I have read somewhere its because of the condese? to prevent the agar to get too wet?
But why should I put the plates still upside down after I placed my organism on it? (why do you put them upside down in the incubator?)
Posted 24 April 2009 - 06:57 AM
In the incubator, once the petri dish is dried, there is no condensation, I don't know. Maybe because I'm used to keep it upside down, maybe also because their could be less contamination because dust could not fall on the agar... There is no reason not to put it upside down.
Posted 24 April 2009 - 07:48 AM
When the plates are kept agar side up the condensation falls on the lid and evaporates without touching the bacteria
Posted 24 April 2009 - 08:53 PM
Posted 10 May 2009 - 08:43 AM
But it does keep condensation from falling on the colonies, too.