[Alt-photo] Cyanotypes and Hard Water
agitprop at telus.net
Mon May 8 03:36:28 UTC 2017
Ware's cyanotype process specifically mentions that it shouldn't be used
with hard water - which is what we have in abundance here on the
prairies. So, I've been using distilled water to clear the paper after
the sulfamic acid bath (I'm using FAEW) and after the acidic development
and both work well.
But if I use our hard tap water in either step, I notice a difference,
especially after using the sulfamic acid - if I use hard water there, I
get a heavy green cast as soon as I've coated the paper.
Just curious if anyone using the Ware process with hard water is using
something other than distilled water? Is it advisable to try and lower
the PH in the water and make it more acidic? Or should I just stick
with distilled water?
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