>BTW: I prefer using chrome oxide green directly from the tube instead of
waiting
>years for the decomposition of dichromate... ;-)
Chrome oxide green, which is the colour that pipes in public lavatories go when
they are not properly maimtained, is one of the three greens I recommend or gum
printing. Why do so many authors seem to think that only blacks and browns and
blues are suitable ?
> So long washing might be the best, but
>most wet dichromate images are very delicate and I don't want to stand 12 hours
>next to the tray and keep my print from sinking to the ground or touching
others
>.or watching for air bells...
If youdry the print before soaking it you will not damage the surface. Face down
the paper will float and will not sink to the bottom. Some 5 pfennig pieces, if
they are still in circulation, arranged in a line along the moiddle of the back
will preclude air bubbles.
>. What would be the lowest concentration allowed?
>Is there any information about the speed of the decomposition reaction of paper
>in relation to its clearing bath content (sulfuric acid, alum, bisulfite...)?
>Or: could one of our chemists please explain, how to neutralize the clearing
>baths and probably create an alkaline reserve in the paper?
Probably the best appraoach is not to use a clearing bath.
Terry King