~~~~~~~~ Excerpt from the Guide to Platinum-Palladium Photographic Printmaking by Jeffrey D. Mathias ~~~~~~~~
No part of this document may be reproduced in whole or in part without the express written permission of the Author.

Processing Chemistry


Function                    Chemical                                Mixing                                Time

develop                     Kodak HC-110                 8, 16, 32, 64, 128, or            3 - 6 min.
                                                                              512 ml per litter

stop                           Kodak Indicator                12 to 15 ml per litter               30 sec.

fix                               Kodak Rapid Fixer           250 ml per litter                 2 - 4 min. (4127)
                                                                               (Part A only)                      1 - 2 min. (2556)

rinse                           water                                   tray                                            1 min.

hypo clearing            Sprint or Hyco                    1½ oz per quart                         1 min.

wash                           water                                   print/film washer                   10 - 15 min.

wetting                        Kodak Photoflo                 5ml per litter                             30 sec.
 

mask manipulation:

lower density               Potassium Ferricyanide    12 crystals per 30 ml          1 - 10 min.

increase density          Selenium toner                  straight to 1:4                         1 - 4 min.
 

Note: All mixing is with filtered tap water.
 

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