While I've been selenium toning some (not all) of my work for years - I've typically used a 1:19 dilution, with a goal of just a slight shift in Dmax and tonality.
...and while the published data regarding solution capacities all seem to apply to a 1:3 dilution - I cannot find any reference to capacities while using much higher (such as my 1:19) dilution - so I've basically just been throwing this away when toning times get excessive. Pretty much standard operating procedure with others on this forum as far as I can tell.
But...are there any published references to KRST capacities at high(ish) dilutions? Or does this simply relate in a linear fashion like it does for film...as in square inches per total amount of concentrate present in solution?
The reason I ask is that my technique of just lengthening times to compensate for variable solution activity can give me results that are visibly inconsistent (which bugs me) - and I'm wondering if either I'm doing something wrong or if there might actually be some other changes in the aging KRST (other by-products, etc.) which might give such inconsistencies...and if so, then I'd truly like to know more about what others feel about reasonable capacities for higher dilutions.
...understanding that I could just throw out a given batch of KRST after each session - but this seems wasteful, expensive, and environmentally unsound.
Bookmarks