Originally Posted by Paul Verizzo
Unfortunately ID-78 was published incorrectlyn in a Photolab Index back in the early 60's and that mistake goes right on through most US publications and websites such as Silvergrain. Ironically it's correct onDigitaltruth. The formula as published widely by Ilford should have 4.5 gms per litre KBR (not 0.4g).
Last edited by Ian Grant; 07-24-2008 at 10:16 AM. Click to view previous post history.
Yes, I discovered that on my own research
That's a good caution, although I never gave the formula.
Originally Posted by Ian Grant
So with the correct bromide, it is a warm tone developer. Allegedly like the WA. (I've not used either.)
Guys, how long do you hang onto print dev?
I process most of my prints in open trays and frisbee the stuff at the end of each day.
I use either Agfa WA or Ilford PQ - both of which are dark yellow/brown at the end of 12hrs or so in the tray
There is no noticeable drop in performance (I can detect) but they look pretty spent by the end of a session
Both leave a dark grey/black deposit on the tray which only partly gets removed with elbow grease.
If you process Fibre based papers the developer doesn't last that long, mainly because of the absorption and carry over. So 1½ litres of ID-78 or Neutol WA generally lasts a 3 or 4 hour session and I may have to top it up with fresh. It would certainly last 12 hours or more if used less.
I use Calbe N113 which is an powder-developer. In original package it can be stored for years, even
the lifetime of the solution is outstanding. The price is also surprisingly cheap, 1,50 Euro per litre
won´t make you poor. Give it a try, I think availability in Denmark won´t be a problem.
Sponsored Ad. (Subscribers to APUG have the option to remove this ad.)
Slixtiesix availability in Denmark well.. normally I buy from Germany because most dealers in Denmark don't have kemistry anymore and to expensive if they are going to order it for you.
The "problem" is that I use 40ml for test print and 100ml for larger op to 30x40cm so mixing 1 Liter is much if it doesn't last long.. ( using Jobo drums)
Ok that´s an issue. I develop my prints in trays and store the solution in plastic bottles while not used.
It keeps well even for 6 month. I forgot to mention that N113 is used as stock solution!