Different Palladium different source?

Discussion in 'Alternative Processes' started by dpurdy, Jul 24, 2008.

  1. dpurdy

    dpurdy Member

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    A few years ago I bought quite a large supply of Palladium from a place on the US East coast. (with the economy, thank god for that, it saved a bunch of money)

    The last few days I got to the bottom of the bottle and switched to a Palladium that is from Bostick and Sullivan. I noticed right away that the B&S palladium was redder in color as I brushed it on.

    I made no changes in time or contrast and found the B&S palladium to match exactly the stuff I have been using the last few years but the B&S palladium prints far more reddish/pinkish brown by comparison to the East Coast stuff which prints far more neutral in color.

    I really didn't expect any difference at all. Can anyone account for it or draw some conclusion from it? The older stuff I mixed from powder and the B&S stuff was provided in solution.

    thanks Dennis
     
  2. photomc

    photomc Member

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    where they both Lithum,Ammonium,Cesium, etc? If they were made with different salts this could account for a difference. Also, if you are using the same developer (Potassium Oxalate?) the old metal salts will still be in there and could be reacting to the new pd mixture. Give B&S a call, they are great in assisting with these sorts of issues...though I am sure others will pitch in with other ideas.
     
  3. dpurdy

    dpurdy Member

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    The B&S stuff is Sodium Chloropalladite and the previous stuff I put in solution myself with salt is Palladium chloride which I think mixed is the same stuff as B&S palladium solution #3

    also I have always used Potas Oxalate Developer and the batch I have right now is well seasoned. But since I can actually see a difference in color right when I am brushing the Palladium on I doubt the Developer is the "culprit"

    Actually it isn't a problem or difference in quality.. it is just a difference in color. So now I guess I have another color option.
    Dennis
     
    Last edited by a moderator: Jul 24, 2008
  4. Dana Sullivan

    Dana Sullivan Advertiser Advertiser

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    We use plain old sodium chloride in our solution. I have heard reports that using sea salt will change the color of the print because there are other chlorides beside sodium. Does this help?
     
  5. dpurdy

    dpurdy Member

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    Thanks Dana. I hope you didn't take my thread as a knock on B&S palladium. As I was sorting out my stuff I came to realize that I actually have some parts of 4 different batches of Palladium. well now three as I ran out of one. I am now not sure whether the two different color printing batches aren't both from B&S. Actually I think the warmer color is more what people expect and if you use hot developer gives you very rich brown prints.

    Anyway it is a curiosity
    Dennis
     
  6. Dana Sullivan

    Dana Sullivan Advertiser Advertiser

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