Jump to content

Photographic Eradicator Formula?


phil_smith4

Recommended Posts

Hi, I do alot of fixed line photographic work and you can no longer get the photographic 2-

part eradicator kits.

 

Does anyone know the formula used in the Kodak or Michlin products?

 

There is a company in England selling a kit from a kodak recipe but being in the USA I'd

rather not have to order from overseas.

 

Thanks, Phil.

Link to comment
Share on other sites

  • 1 year later...

Well I eventually answered my own question. I used a MSDS sheet from a former supplier

to reconstruct a recipe. I dont know if anyone else in the world will ever need this but I

will put it here in the forums for posterity.<p>

 

Photo eradicator Part A basically converts the black silver on a litho type film/neg to a

white silver salt and then Part B disolves the white salt leaving your film unblemished. We

use it to erase lines, etc. on Architectural Drawings and other things that we put on fixed-

line mylar like Agfa's PM12.<p>

 

Photo Eradicator<p>

 

Part A<br>

750ml distilled H20<br>

50ml Muriatic Acid<br>

90 Grams Ammonium Chloride<br>

110 grams Cupric Chloride<br>

water to make 1 litre<p>

 

Part B<br>

950ml distilled H20<br>

50grams Thiourea<br>

water to make 1 litre<p>

 

Thiourea is a carcinogen. We had to set up an account with the supplier before then

would send it to us. I think the other stuff is pretty common.<p>

 

I put this in 1oz. dropper bottles so I can just squeeze out a drop where I need it.<p>

 

As soon as you put the Green (Part A) solution on the silver it will turn white. Its

instantaneous. Wipe that off with a damp cloth and put the Clear (Part B) on any silver that

turned white and it will dissolve instantly. Wipe that good with a damp cloth and make

sure you get any traces of the chemical off the base material, then just let it dry.<p>

 

Dont know if anyone will ever use this besides me but who knows.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...