Hi. I use sodium fluoride 10mM as general inhibitor for protein phosphoseryl and phosphothreonyl phosphatases and sodium orthovanadate 0,2 mM that is an inhibitor of protein tyrosine phosphatases, alkaline phosphatases and a number of ATPases.

Hi valeria,,,,,i would appreciate if you could say how you prepare vanadate solution....

we by the sigma sodium orthovanadate s-6508, that is a dust

and when prepared we store it at -20°C

yes I do aliquots and store them at -20°C