Moisture in Agar plates!
Posted 24 September 2009 - 02:49 PM
Posted 24 September 2009 - 02:58 PM
Did you let the plate to cold down to room temperature in the laminar before closing their lids prior to storage in chiller?
Posted 24 September 2009 - 03:16 PM
What was the temperature of the media when you poured the plates? It sounds like there was a lot of condensation on the lids, and when it cooled, the drops fell on the agar. There's no worry - since the condensation came from the media, and they have Kanamycin in them, chances are slim that they will get contaminated. You can invert the plates and allow them to sit overnight; however, you don't want them too dry - the kanamycin will degrade without moisture.
Posted 24 September 2009 - 06:20 PM