Hormone longevity

[The Fifth Beatle]

Dear ArabNetters,

I would like to ask about the longevity of hormone stocks (@ 100mM - 
1M; filter sterilised) when stored at -20 degrees C.
We use IAA, IBA, and NAA for plant growth experiments with MS medium 
solidified with agar or phytagel.
Is 3 months too long?  6 months?

Thank you for your time.

Eugene B Fredericks
Dept of Genetics & Developmental Biology
Monash University
Melbourne, AUSTRALIA



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