RE: pt/pd mounting
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? 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. > But platinum is a catalyst and turns atmospheric sulphur dioxide into > sulphuric acid which causes yellowing and embrittlement of the paper the > print is on. Old platinum prints are often quite acidic, so I see only > benefits from buffered boards. > > > Liam > > -----Original Message----- > From: Camden Hardy [mailto:camden@hardyphotography.net] > Sent: 09 September 2006 18:19 > To: alt-photo-process-l@usask.ca > Subject: pt/pd mounting > > > I've heard a myth I'm looking to bust or confirm, and I figured this would > be a good place to find out. > > Someone once told me (can't remember who or where or when) that since > pt/pd is an acidic process that mounting a print in pH neutral or acid > free mat board will actually shorten the life of the print. > > So my question is, within the context of pt/pd, how important is the pH > level of mat board for archival mounting? > > Thanks, > Camden Hardy > > camden[at]hardyphotography[dot]net > http://www.hardyphotography.net > >
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