RE: PT/PD MOGULS, MAESTROS & GURUS
HI, I am going to try the 1:60 HCl to water clearing bath. Can I store this dilute HCl clearing bath in a plastic bottle or must I use glass. CHEERS! BOB -----Original Message----- From: Eric Neilsen [mailto:ejnphoto@sbcglobal.net] Sent: Wednesday, February 14, 2007 12:50 PM To: alt-photo-process-l@usask.ca Subject: RE: PT/PD MOGULS, MAESTROS & GURUS You may try it on a wet, freshly processed print first. I am home with flu today, so no testing for a little while. : ( I will have to go out and buy some for testing. I have been using alternatives to the HCL for quite some time. Eric Neilsen Photography 4101 Commerce Street Suite 9 Dallas, TX 75226 http://e.neilsen.home.att.net http://ericneilsenphotography.com Skype ejprinter > -----Original Message----- > From: BOB KISS [mailto:bobkiss@caribsurf.com] > Sent: Wednesday, February 14, 2007 8:14 AM > To: alt-photo-process-l@usask.ca > Subject: RE: PT/PD MOGULS, MAESTROS & GURUS > > DEAR CHRISTINA, > I do have HCl in the "pool cleaner" form. I will see if I can do > the 1:60 dilution test on one of the test strips that I have kept. I will > tear it in half such that I have the same tones on both pieces, "bleach" > one > and then do a dry comparison. I may even get out my X-Rite and be > somewhat > scientific about it! > CHEERS! > BOB > > -----Original Message----- > From: Christina Z. Anderson [mailto:zphoto@montana.net] > Sent: Wednesday, February 14, 2007 12:39 AM > To: Alt, List > Subject: Re: PT/PD MOGULS, MAESTROS & GURUS > > Thanks, John, for saving me time locating my source; you are exactly > correct. > > Eric, since you have hydrochloric acid (alas I was wrong, I only have > sulfuric, nitric, and phosphoric) and since pt/pd is your process of > choice, > > why don't you do a step wedge of each and tell us what you find? BTW, > John, > > I checked Neblette's 4th edition and I can't find the Nadeau source > there, > even though there is a chapter on pt/pd. Neblette quotes Clerc and a > couple > > others, tho. > > But Bob, back to your original question--do you even have HCL and can you > see if a dilute mix will do what you need it to do? Isn't HCL that pool > chemical stuff that one could get at a hardware store? > Chris > > > ----- Original Message ----- > From: "John Roseborough" <platinumprinter@msn.com> > To: <alt-photo-process-l@usask.ca> > Sent: Tuesday, February 13, 2007 11:59 AM > Subject: Re: PT/PD MOGULS, MAESTROS & GURUS > > > > Eric, > > > > In "The History and Practice of Platinum Printing" by Luis Nadeau (2nd > > edition) page 32, Nadeau states that HCl is to be used highly diluted to > > 1% - 1.5% for Platinum and 0.5% for Palladium. > > > > John Roseborough > > > > ----- Original Message ----- > > From: "Eric Neilsen" <ejnphoto@sbcglobal.net> > > To: <alt-photo-process-l@usask.ca> > > Sent: Tuesday, February 13, 2007 8:46 AM > > Subject: RE: PT/PD MOGULS, MAESTROS & GURUS > > > > > >> Chris, WHERE is that note taken from? > >> > >> Eric Neilsen Photography > >> 4101 Commerce Street > >> Suite 9 > >> Dallas, TX 75226 > >> http://e.neilsen.home.att.net > >> http://ericneilsenphotography.com > >> Skype ejprinter > >> > >>> -----Original Message----- > >>> From: Christina Z. Anderson [mailto:zphoto@montana.net] > >>> Sent: Tuesday, February 13, 2007 8:43 AM > >>> To: alt-photo-process-l@usask.ca > >>> Subject: Re: PT/PD MOGULS, MAESTROS & GURUS > >>> > >>> Bob, > >>> Even tho I have hydrochloric acid I have never used it to reduce a > >>> print. > >>> My notes say "palladium is more soluble in strong acids, so if you use > >>> hydrochloric acid, the traditional clearing bath, your dilution of > that > >>> clearing bath is 0.5%, not 1% as it is with platinum." I, too, am > >>> interested > >>> if this is wrong? And I wonder if it will work when using > >>> NA2/palladium...hmmm...I have a too dark print, maybe I should just go > >>> do > >>> it. > >>> Chris > >>> > >>> > >>> > DEAR PT/PD MOGULS, MAESTROS & GURUS ON THIS LIST, > >>> > Please help me resolve what appears to be a conflict in both the > >>> > literature and common wisdom. > >>> > Here are the two conflicting bits of info: > >>> > 1) You must not use a hydrochloric first clearing bath when printing > >>> with > >>> > palladium as it will bleach the print, even though the concentration > >>> > should > >>> > be around 1 to 1.5 %. > >>> > 2) Recently, when I asked the list if there was any way to slightly > >>> reduce > >>> > the density of a Palladium print I was told that the concentration > of > >>> HCl > >>> > necessary to have any effect would be so high that it would be > >>> > dangerous > >>> > to > >>> > use in a regular darkroom and might have deleterious effects on the > >>> paper. > >>> > I was told to just make another, lighter print. > >>> > *********So, you can see my dilemma. Is this not a contradiction? > >>> > 'Tis > >>> a > >>> > puzzlement! Please enlighten me...as it were! > >>> > CHEERS!> BOB > >>> > >> > >> > >> > >> > > > > > >
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