Search found 8 matches
- Tue May 21, 2019 3:44 am
- Forum: The Digitaltruth Forum
- Topic: Phenidone Developer
- Replies: 2
- Views: 7512
Re: Phenidone Developer
Ilford published their first PQ version of ID-11/D76 in 1954, they evolved it through a series of buffer changes to become Autophen which was their commercial Photo finishing developer for D&P labs. The substitution is 0.2g Phenidone for the 2g Metol. See here: http://lostlabours.co.uk/photograp...
- Tue May 21, 2019 3:39 am
- Forum: The Digitaltruth Forum
- Topic: Pre-Aging your Fine Grain Developer
- Replies: 13
- Views: 29170
Re: Pre-Aging your Fine Grain Developer
Actually Hans Windisch "The New Photo School" was published in English as well, I have a 1938 copy, as well as a 1944 wartime German copy. It was expanded after the war and published as "The Manual of Modern Photography - The Technique" I have a 1956 2nd revised edition, again in...
- Thu Nov 07, 2013 3:05 pm
- Forum: The Digitaltruth Forum
- Topic: Playing around with a Microdol- X Substitute
- Replies: 24
- Views: 57686
Re: Playing around with a Microdol- X Substitute
Kodatol, Microdol and Microdol-X were never general purpose go to fine grain developers, they were all specialist super/extra fine grain developers and as such reduced the inherent film speed of a film by around a stop in comparison to normal fine grain developers like ID-11/D76. A hybrid extra fine...
- Wed Oct 16, 2013 10:16 am
- Forum: The Digitaltruth Forum
- Topic: Shelf life of Phenidone
- Replies: 12
- Views: 23621
Re: Shelf life of Phenidone
In my experience Phenidone has a very long shelf life, I have some Ilford Phenidone from the early 1960's that's still as good as new.
Ian
Ian
- Mon Sep 16, 2013 4:58 am
- Forum: The Digitaltruth Forum
- Topic: Developers
- Replies: 8
- Views: 16954
Re: Developers
I had a discussion with a senior Ilford research manager over lunch on a visit to Mobberley back in the early 1980s and we touched on Paterson chemistry, what he had to say was quite an eye-opener. He'd been involved in the manufacture of Paterson chemistry as it was originally manufactered by Ilfor...
- Wed Aug 07, 2013 5:00 am
- Forum: The Digitaltruth Forum
- Topic: Is my Microphen formula correct?
- Replies: 20
- Views: 42662
Re: Is my Microphen formula correct?
It's just one of Ilford's PQ variants of ID-11. It may well have been the formula for a powdered version of Autophen. It was quite common to use Metabisulphite as a preservative to prevent oxidisation of the developing agents (usually Part A) in the packaging, both Ilford & Kodak have done this ...
- Mon Aug 05, 2013 7:19 am
- Forum: The Digitaltruth Forum
- Topic: Is my Microphen formula correct?
- Replies: 20
- Views: 42662
Autophen
The Formula for Autophen an Ilford photo-finishing developer itself a variant of ID-11 is:
Sodium Sulphite 100 g
Hydroquinone 5 g
Borax 3 g
Boric Acid 3.5 g
Phenidone 0.2 g
Potassium Bromide 1 g
Water to 1 litre
This has been mistakenly listed as Microphen in many US publications.
Ian
Sodium Sulphite 100 g
Hydroquinone 5 g
Borax 3 g
Boric Acid 3.5 g
Phenidone 0.2 g
Potassium Bromide 1 g
Water to 1 litre
This has been mistakenly listed as Microphen in many US publications.
Ian
- Mon Jun 21, 2010 9:15 am
- Forum: The Digitaltruth Forum
- Topic: Hydroquinone with Metol and Phenidone.
- Replies: 45
- Views: 229216
Re: Hydroquinone with Metol and Phenidone.
There are a number of other variants of this formulae which was first published in 1954 with simpler buffering, essentially it's Ilford's PQ version of ID-11/D76, which became known as the Axford-Kedall Fine Grain film developer and was designed for large scale photofinishing use where it's stabilit...