[rollei_list] Re: was : Agfa Scala, now : home-made B&W slides in 120 revisited

  • From: "claude.eichel" <claude.eichel@xxxxxxxxxxx>
  • To: "rollei_list" <rollei_list@xxxxxxxxxxxxx>
  • Date: Thu, 2 Jun 2005 13:40:58 +0200

Hello Emmanuel and Richard,
- The amount of sodium thiosulfate results of the reading of P. Glakkides book, 
in my understanding it was a constant but I can be wrong. An other reason is 
that I wanted to find a standard procedure usable by anybody. I agree with you 
that some realadjustments can by done varying this quantity.
- Fogging is not a problem for the most part of the mark of films, the only one 
for wich I did'nt get any good result is Fuji Acros 100. I'll try to add 
bromide in PQ.
- The bleaching choice was done more on toxicity than efficiency. But 
permangante woks fine for me.
- The fixing step is present in the procedure, I'm allways using a hardening 
fixer.
- Thank you for the formulae! The second one (Agfa) its very interesting for me 
because it mix a developer and an hardener : formaldehyde + sodium hydroxide is 
the base of an hardener. I'll try it asap.
I have a question Richard : I'm trying to avoid light fogging after clearing. I 
made a test with Semicarbazide hydrochloride mixed in the second 
developper(found in Glafkides)  but I did not obtain good results do you have 
an idea ?
Regards
Claude

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