[pure-silver] Re: FW: Re: What happend? CORRECTION

Question::::   On whose (manufacturer) RC paper are theses "stains" appearing.  
Would like to hear from everyone that has seen this. 

Dave
  ----- Original Message ----- 
  From: Sandor Mathe 
  To: pure-silver@xxxxxxxxxxxxx 
  Sent: Thursday, June 29, 2006 9:21 AM
  Subject: [pure-silver] Re: FW: Re: What happend? CORRECTION



  There must be a significant chemical difference between the pure white 
borders and the light grey 
  areas when it comes to forming the pinkish or golden brown stain.  I have 
some prints where the brown 
  stain follows the density contours in the image exactly (like a posterization 
line) slightly darker grey areas 
  are not affected and white areas are not affected.  It almost always seems to 
be the lightest grey 
  areas that are effected.  Again I have never seen this with my fibre prints, 
only RC.   

  Did my darkroom care change that much when I switched to exclusively fibre 
paper for all display prints?   
  Or is it completely due to using a two bath fix process, which I always use 
with fibre prints. 
  I don't know.  My stained prints are all at least 7 years old. 

  Sandor   
  pure-silver-bounce@xxxxxxxxxxxxx wrote on 06/29/2006 07:58:38 AM:

  > I suddenly realised my test was not complete: I only tesed the white
  > borders, so I also put some 1+9 KRST on the golden borwn coloured area,
  > and sure enough: a bright red stained spot appeared (which could be
  > wipped of easily), so it's inadequate fixing after all, and through some
  > "funny agitation" the borders are still white (somehow I find this hard
  > to believe: the white borders arearound the grey , now brown sky and
  > there is an abslute sharp border between both colours)
  > 
  > Best,
  > 
  > Cor
  > 
  > > -----Original Message-----
  > > From: Breukel, C. (HKG)
  > > Sent: donderdag 29 juni 2006 13:42
  > > To: 'pure-silver@xxxxxxxxxxxxx'
  > > Subject: RE: [pure-silver] Re: What happend?
  > > 
  > > Hi Richard,
  > > 
  > > >
  > > >    It could still be incomplete fixing. Some methods of
  > > > agitation will cause more flow at the edges of a print than
  > > > others. This can also be true of washing. The blotchy effect
  > > > sounds like insufficent fixing to me.
  > > >    One way to find out is to test the print using either the
  > > > sodium sulfide test or the Selenium toner test. The Selenium
  > > > test is simply a solution of KRST diluted 1 part toner to 9
  > > > parts water.
  > > 
  > > 
  > >     Place a drop of either solution on a clear area of the
  > > > print or film. Leave for a minute or two and blot off. There
  > > > should be no visible stain.
  > > 
  > > 
  > > I just did above test with KRST 1+9, no visible stain (the print was
  > > untoned)
  > > 
  > > I got offlist an JPEG which npretty much showed the same phenomena,
  > golden
  > > brown colour in a small "grey-zone", only on a partculair size of
  > paper
  > > 
  > > Best,
  > > 
  > > Cor

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