Agar drying in petri dishes, why?

Alan S. Wicks NAP-4 at worldnet.att.net
Fri Oct 24 11:03:52 EST 1997


Greetings,

I transferred some Coprinus comatus to MEA in petri dishes the other day
(Wednesday).  I wrapped the dished with Parafilm and set them on the
bench in my lab.  I looked at them this morning, Friday, and they are
growing but the agar is cracking, even with the Parafilm seal.  The
other dishes of MEA that I didn't use are still in the transfer hood,
with the air on, are unsealed, and are NOT cracking.

Any ideas why or is this normal?

Alan S. Wicks
NAP
Pasco, WA



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