paraformaldehyde stocks

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From:"Janice A. Dominov" <> (by way of histonet)
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We routinely use paraformaldehyde (2% or 4% PF, prepared in PBS) for
immunocytochemical work. We preferably use it on the same day as prepared
but sometimes use it for up to 3 days stored at 4C.  Someone told me that
4% stocks can be stored frozen for longer periods of time. Does anyone have
any information on/ experience with frozen PF stocks?

Thank you for sharing your expertise.

Janice Dominov

Janice A. Dominov, Ph.D.
Neuromuscular Research Laboratory	Phone:(617) 726-4458
Massachusetts General Hospital		Fax:  (617) 726-8543
149 13th Street
Charlestown, MA 02129

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