Black and White Bleach-Clearing Chemical

[keith_lubow]

Hello,

 

A while back, I read the data sheet on Ilford's b/w reversal process, and now I

seem to have lost the paperwork for it. There's development, bleach,

bleach-clearing agent, wash, reexposure, then a normal b/w process.

 

My question is: What are the bleaching times, and is it regular potassium

ferricyanide bleach, and also, what is the name of the bleach-clearing chemical

and where can I get it?

 

Also, they may have suggested a certain developer for one of the steps, and I

don't remember. Probably a harsh (possibly paper?) developer for the first

development to ensure decent contrast.

 

Thanks,

 

Keith

[bobmichaels]

Google is your friend. I believe the Ilford data sheet for reversal processing answers all your questions. It's on the Ilford website.

 

http://www.ilfordphoto.com/Webfiles/20061291034093.pdf

[keith_lubow]

Thanks, Bob. Any idea of a good source for the potassium permanganate, sulphuric acid, and sodium or potassium metabisulphate?

 

Thanks,

 

Keith

[ben_hutcherson]

Photographer's Formulary will have everything you need.

 

Keep in mind, however, that you'll need to fill out a DEA form and supply the exact mix and intended use for everything you're ordering.

 

Potassium permanganate and sulfuric acid are both used in the production of meth.

[keith_lubow]

Ben,

 

Thanks, I found exactly what I need, and the DEA form should not be a problem, except I need to renew my ID. I can't believe people purposefully put that crap into their bodies.

 

Keith