ALLOZYME electrophoresis advice

[Jeremy J. Bruhl]

Hi

Re:     -70C storage for ALLOZYME electrophoresis - Advice wanted.

The/A "Bible" re  ALLOZYME electrophoresis i.e. a book by Richardson, =
Baverstock and Adams states that it is essential to store samples at -50 =
C or colder. Samples should only be stored at -20C when no alternatives =
are available and then for the shortest possible time.

Our division is intending to purchase a freezer suitable for long-term =
storage of plant samples that will be subjected to ALLOZYME =
electrophoresis (we would also hope to use the freezer for DNA samples =
for sequence work).
Is a -70C ultra deep freezer essential or will samples keep adequately =
at -20C (and if so, for how long)? Many thanks for your help.

Cheers
Jeremy

Dr Jeremy J. Bruhl
Senior Lecturer in Botany
Director, N.C.W. Beadle Herbarium (NE)
Division of Botany
University of New England, Armidale, NSW 2351
Australia
jbruhl at metz.une.edu.au
http://www.une.edu.au/botany/jjbres.htm
Phone:  +61 2 6773 2429
Fax:    +61 2 6773 3283