How long is powdered tissue media good for?

John Brunstein brunstei at
Wed Jan 5 21:15:28 EST 1994

	Just wondering if anyone out there has any experience with using
tissue culture media (as made from the premix packages) after its 'expiry
date'....we seem to have a lot of DMEM premix still in the sealed foil
packets which has sat in our cold room for longer than 1 year.  Does it
really go bad or is this just a marketing ploy to encourage labs to keep
buying fresh supplies?

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