Hi,
    Just a stab in the dark here but I'd vote no on this one. The APK just sits
on top of any buffer on the slides. It doesn't really do much except cover the
solutions so I don't think it would be as important as testing the buffer
regularly. Although if a problem arose one should keep it in mind as a
possibility.
Amos Brooks

Jig1357@aol.com wrote:

> We use the Ventana system for IHC, and was wondering with all this discussion
> about pHing the buffers---should we be pHing the APK wash solution?  Is this
> considered an actual buffer?
>
> Many thanks
> Jeanne Godine
> Pathology Consultants
> Lynchburg, VA