We have used Periodic Acid as the oxidiser in GMS for at least the last
20years with no problmes whatsoever.  However, if you are not satisfied that
the oxidative step is performing well enough then, expose the section to the
Periodic acid for a longer time.

Bill Sinai
Laboratory Manager
Tissue Pathology
ICPMR
P.O. Box 533
Wentworthville NSW 2145

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Subject: Re: GMS help


> Sigma has a silver stain kit for the GMS.  It uses Periodic acid.  I am
sure
> they would be happy to send you a free sample.
>
> Jeanie Wade, H. T.
>