User talk:Andy Maloney/Notebook/Lab Notebook of Andy Maloney/2010/07/26/Whole casein failure

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Steve Koch 17:47, 27 July 2010 (EDT): Tough lesson, but glad you figured it out! And very glad you started that thread on friendfeed, very productive. I agree with Cameron and others -- the more the better. A question about your page: Did you read somewhere that PEM goes bad? Or is this just what happened to you?

Andy Maloney 01:49, 28 July 2010 (EDT): This is just what happened to me. I don't think I stored it properly and so when I went to get an aliquot from my stock solution, I notice gunk that looked like a sourdough mother in it.