Ampicillin powder stability - (May/16/2007 )

Due to a shipping/receiving snafu some ampicillin powder I ordered came to room temperature for about 24 hours before being placed at 4 C. Is this ok, or must I buy new ampicillin?

it is OK! take it easy.

it is just a powder. Shouldnt be any problem. IF in solution form, yes ampicillin is pretty easy to be solubilised.

better u can check it easily........before use in very important experiment