Does anyone have Ilfords Reversal PDF? Link is dead.

[NortheastPhotographic]

Hi, everytime I try to navigate to Ilford's PDF on reversal processing I am stymied by a 404 error. Does anyone happen to have the doc and would be willing to share it?

 

[ozphoto]

Hi, everytime I try to navigate to Ilford's PDF on reversal processing I am stymied by a 404 error. Does anyone happen to have the doc and would be willing to share it?

Is this what you need?

http://www.silverprint.co.uk/wp-content/uploads/2014/07/Ilford-Reversal-Processing.pdf

 

[NortheastPhotographic]

Yes! That's perfect, I've saved it in my records.

Do you happen to know if any bleach formulation can be used? Their recipe is a little unclear, but I have one based on Pot. Ferri. written down somewhere...

 

[ozphoto]

Sorry, can't help you with that one - but I'm sure someone will chime in who can.

 

[Anon Ymous]

Yes! That's perfect, I've saved it in my records.

Do you happen to know if any bleach formulation can be used? Their recipe is a little unclear, but I have one based on Pot. Ferri. written down somewhere...

The ferricyanide bleach is a rehalogenating one and that's not what you need. You want a bleach that will remove the developed silver from the first developer. The one in Ilford's pdf is one of the those that can be used. You may want to use half the quantity of potassium permanganate, especially with some films. Before committing any serious work to this process you should do a test or two, especially the bleach part.

 

[Ian Grant]

Yes! That's perfect, I've saved it in my records.

Do you happen to know if any bleach formulation can be used? Their recipe is a little unclear, but I have one based on Pot. Ferri. written down somewhere...

Wrong type of Bleach , Potassium Ferricyanide is used with Potassium Bromide as a re-halogenating bleach for toning or re-development

For reversal you need a Potassium Permanganate or Dichromate bleach usually with dilute Sulphuric acid.

Ian

 

[pdeeh]

Do you happen to know if any bleach formulation can be used? Their recipe is a little unclear,

How so?
This is what is in that PDF and it seems perfectly clear:

Bleach
Two solutions, A and B are mixed as follows:
For solution A add 2g of potassium permanganate to 500ml water
For solution B add 10ml of concentrated sulphuric acid to 490ml water
If concentrated sulphuric acid cannot be obtained use dilute acid. This can be a 10% solution
If 10% sulphuric acid is used add 100ml to 400ml of water to make the part B bleach solution.
These stock solutions will keep for a long period of time before they are mixed together.
For use, mix equal parts of A and B, making a fresh working solution for each film, and discard after use.

You can of course use a bleach based on Potassium dichromate and Sulfuric acid, which unlike the permanganate bleach can be premixed and reused. The one in my cupboard is about 2½% and works very adequately. Some people don't like dichromate bleaches because of the greater difficulty of disposing of them safely and the toxicity of the dichromate.

If you search the forums you'll find all sorts of discussions about using persulfates and other hard to find chemicals and whatnot, but it's easiest just to use the Ilford recipe really I'd have thought.

 

[NortheastPhotographic]

How so?
This is what is in that PDF and it seems perfectly clear:



You can of course use a bleach based on Potassium dichromate and Sulfuric acid, which unlike the permanganate bleach can be premixed and reused. The one in my cupboard is about 2½% and works very adequately. Some people don't like dichromate bleaches because of the greater difficulty of disposing of them safely and the toxicity of the dichromate.

If you search the forums you'll find all sorts of discussions about using persulfates and other hard to find chemicals and whatnot, but it's easiest just to use the Ilford recipe really I'd have thought.

You know what you're absolutely right. I must have not had my thinking cap on when I read it the first time, but it is indeed perfectly clear haha. Looks like I can order what I need from the Photo Formulary.

 

[pdeeh]

hehe these days I generally have to read something three times and then go away and come back a couple of days later then read it another five times before it makes sense. I think it must be my age.