Scatter Factor Stability @ -70C

[Robert Hartley]

Hello All.
I've found some scatter factor in our -70C freezer. Its been there for 3-4
years (it is doc'ed but I can't remember off hand). I wish to use on MDCK
(no surprise there). It has never been used so hasn't been thawed and
refrozen.

The query is:- Will this be OK to use and if so how long can I store @ -20
in small alliquots for frequent use?

Cheers
Bob; Rainy Scotland