Hi Rod,
we use an indirect method, a few drops of solution XX on the material. If it changes colour, there is no Cr, if no change there is Cr. Used it for checking chromate on inside/outside of microwave waveguides. Takes seconds. I don't  have the recipe available instantly, but if you are interested I can get it. Simple chemistry I suppose.
Ingemar Hernefjord
Ericsson Microwave Systems

> Does anybody know of a quick test to see if I am removing chromate
> coating on laminate foil? I know about EDX, but I want to do this in
> our lab.
>
> Thanks,
>
> Rod

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