Page 3 of 3 FirstFirst 123
Results 21 to 22 of 22

Thread: Easy alternative processes?

  1. #21

    Join Date
    May 2006
    Sillycon Valley, CA

    Re: Easy alternative processes?

    I just checked in the book "OverExposure: Health Hazards in Photography" by Susan Shaw, 1983, and here is what is listed for potassium ferricyanide (Farmer's reducer):

    Potassium ferricyanide is only slightly toxic by skin contact, inhalation or ingestion. Exposing potassium ferricyanide to intense heat, hot acid or strong ultraviolet light can cause decomposition and release of highly toxic hydrogen cyanide gas.
    Potassium ferrocyanide (carbro printing process, reducer) also has the same description.

    The book also has sections on various processes including cyanotypes. It says "Potassium ferricyanide is only slightly hazardous by itself." Among the precautions is to "avoid using carbon arcs for printing" and saying that using "sunlight, a sunlamp or another light source" is preferable.


  2. #22
    Vaughn's Avatar
    Join Date
    Jan 2007
    Humboldt County, CA

    Re: Easy alternative processes?

    That is the standard dope about Potassium ferricyanide/cyanotypes. It is considered a safe process for kids...and I do not know how many 10s of thousands of "Sun Print" kits have been sold and used by kids.

    Carbon arc lamps are intense -- a good friend ran the carbon-arc powered Simplex projector at the local movie house for awhile. The movie house cat was also named Simplex. The print-making lab at the university ran one for silk screening many years ago.
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

Similar Threads

  1. Alternative processes for beginners
    By Curtis Nelson in forum Style & Technique
    Replies: 17
    Last Post: 13-Jul-2016, 14:32
  2. Easy intro to alternative processes
    By Ken Gewant in forum Darkroom: Film, Processing & Printing
    Replies: 24
    Last Post: 11-Jun-2015, 18:10
  3. Alternative Processes
    By dimento in forum Style & Technique
    Replies: 3
    Last Post: 14-May-2013, 03:06
  4. Alternative processes help please
    By Albert.Adderley in forum Darkroom: Film, Processing & Printing
    Replies: 6
    Last Post: 19-Feb-2011, 09:33
  5. ULF, alternative processes and the environment
    By Marco Annaratone in forum Cameras & Camera Accessories
    Replies: 13
    Last Post: 7-Aug-2006, 02:16


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts