Sandy King wrote:
>
>
> I don't know how this works for gum but tests which do not account in
> any way for the total percentage of gum in the final solution used to
> coat the paper do nothing to answer the relevant question. Which is,
> when using a pigmented gum solution of a specific percent with a
> certain amount of pigment, what is the relationship in terms of speed
> and contrast that results from varying the percentage of dichromate
> in the solution.
This is exactly the question my experiment answers; everything is held
constant but the percentage of dichromate in the solution.
Received on Sun Nov 30 19:44:41 2003
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