Re: pt/pd mounting
On Sep 11, 2006, at 8:11 AM, Camden Hardy wrote:
Camden, I don't have any information to tip the scales one way or the other, but from where I'm looking, the scales are already tipped.Thanks to Liam and Gawain for the responses. So that leaves us with one "busted" and one "doesn't really matter". Anyone want to tip the scales?
Your question was
Someone once told me (can't remember who or where or when) that since
This is a different question, as I read it, than whether using a buffered board, where the pH of the board has been raised to 8 or 9 with the addition of calcium carbonate, will shorten the life of the print. Both of the answers addressed this second question, and it makes sense that they answered this question, because that's probably what your vaguely remembered warning was referring to anyway.pt/pd is an acidic process that mounting a print in pH neutral or acid
The way I read it, both Liam and Gawain answered this seond question in the negative: using a buffered board shouldn't hurt your pt print, Lord willing and the creek don't rise. But the answer to your original question is also "no," and not just because as Liam says, a pt print isn't acidic when it's properly washed--even if it was, you wouldn't want to use an acid board. So you're left with the choice of whether to use a pH neutral board (100% cotton rag) or whether you want the additional protection of buffering against the formation of acid in the print over time.
Camden Hardy camden[at]hardyphotography[dot]net http://www.hardyphotography.net On Sat, September 9, 2006 8:36 pm, Liam Lawless wrote:Platinum prints should not be acidic if properly washed after processing.