Static and potassium carbonate

I've started mixing my own developers and have been having trouble with
my potassium carbonate: specifically, when taking it out of the
(Photographer's Formulary) plastic bottle, some sort of static electric
charge is causing it to spray off the plastic spoon as it passes
through te mouth of the bottle. I've not noticed this with any other
chemicals - is this normal? Do I need to put it in a glass jar or use
a metal spoon? Attach a ground wire to the bottle?