Oligo degradation trepidation

[Martin Kennedy]

In article <Ct8zz7.BJG at ucdavis.edu>, szcooley at chip.ucdavis.edu () writes:

....Entire subject matter of previous 2 posts removed....!

> the problem. Operon (a company in California) claim that primers go bad
                                                           ^^^^^^^^^^^^^^
> at -20 oC. Currently I am storing mine at -70 oC or lypholizing aliquots.
^^^^^^^^^^^^> 
> Mike Cooley      mbcooley at ucdavis.ucdavis.edu


Is this for real????  Anybody got any hard evidence?  Do I worry about my 
-20 degree stored oligos (which probably amount to more than a years worth of 
my salary)!  Does anyone have a good reason why oligos might "go off" at -20, 
but not at -70 degrees?  Is anyone form Operon out there...?   

Appreciate  any comments,

Martin

NNNN   NN  Martin A Kennedy (E-mail = mkennedy at chmeds.ac.nz)  ZZZZZZZ  
NN NN  NN       Cytogenetic and Molecular Oncology Unit          ZZZ
NN  NN NN           Christchurch School of Medicine            ZZZ
NN   NNNN              Christchurch, New Zealand              ZZZZZZZ
	      Phone (64-3)364-0880  Fax (64-3)364-0750