Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: Hipo clearing agent formula

  1. #1

    Hipo clearing agent formula

    Hi. Can somebody tell me the formula of Hipo Clearing Agent? I can't buy it in m y country, so I need to make the formula by my self with a local lab or somethin g.

    Thanks in advance

    Jorge

  2. #2

    Join Date
    Jun 2000
    Location
    So. California
    Posts
    191

    Hipo clearing agent formula

    Kodak HE-1: water 500 cc Hydrogen Peroxide (3%) 125 cc Ammonia (3% solution) 100 cc add water to make 1 Liter

    Wash the prints for 30 minutes at 20 C, the soak in solution for 6:00, then wash for 10:00 and dry.(Photo Lab Index 1947)Pat

  3. #3

    Join Date
    Feb 2000
    Posts
    104

    Hipo clearing agent formula

    Jorge, Pat gave you the formula for Hypo Eliminator Solution. Do not use it! Hypo clearing agent is sodium sulfite. If possible, obtain a copy of The Darkroom Cookbook, by Stephen G. Anchell.

  4. #4

    Join Date
    Apr 2000
    Posts
    149

    Hipo clearing agent formula

    See the Formulas page at Unblinking Eye.

  5. #5

    Join Date
    Sep 1998
    Location
    Oregon now (formerly Austria)
    Posts
    2,603

    Hipo clearing agent formula

    Jorge, just so you don't have to go searching around for your formula or spend extra time weighing out chemicals, a hypo clearing solution can be made by using one Tablespoon sodium sulfite per liter. Capacities will be similar to Kodak's recommendations: Papers; 200 8X10's per gallon. films; 160 4X5's per liter with a water rinse before treatment, papers; 80 8X10's per gallon, films; 50 4X5's per liter without the water rinse. Note: Do not use Hypo-Clear with Pyro developers!

    Sodium sulfite is a common chemical available from photo stores, but more cheaply from chemical suppliers. Regards, ;^D)

  6. #6

    Join Date
    Oct 1998
    Location
    St-Petersburg, Russia
    Posts
    60

    Hipo clearing agent formula

    Eugene Doremus is right. The recipe told by Pat Krentz is a so-called "hypo eliminator" and should be used for papers only (even thought there are an information that it may cause some the color shift).

    The sulphite-based Hypo-Clear can be used both with papers and with films (although film can be efficiently washed without any special means).

  7. #7

    Join Date
    Oct 1998
    Location
    St-Petersburg, Russia
    Posts
    60

    Hipo clearing agent formula

    sorry, should be read: "Eugene AND Doremus are right"

  8. #8

    Join Date
    Jun 2000
    Location
    So. California
    Posts
    191

    Hipo clearing agent formula

    I must have mis-understood what you wanted, sorry, Pat

  9. #9

    Hipo clearing agent formula

    Kodak Hypo Clearing Agent is proprietary but this is probably the formula. In any case it will work.

    Stock Solution Sodium Sulfite, dessicated 100.0 grams Sodium Bisulfite 15.0 grams Sodium Citrate 1.0 gram EDTA Tetra-Sodium Salt 1.0 gram

    Dilute 1 part stock solution to 4 parts water for use. Treat film for 2 to 3 minutes and wash for 5 minutes. Treat single weight prints for 2 to 3 minutes and wash for 10 minutes. Treat double weight prints 3 minutes and wash for 20 minutes. The Sodium Citrate and EDTA are to prevent a deposit of Calcium Sulfite on the film in very hard water areas. The wash aid will work without them if the water is not too hard. Sulfite alone will work. Kodak buffers the solution to about neutral for two reasons. First, it minimizes emulsion swelling. That minimises the diffusion path length and increases washing rate a little. The second reason is that it is a pH at which the hardening action of alum hardeners is still effective but at which the mordanting effect the hardener has on thiosulfate is no longer effective.

  10. #10

    Re: Hipo clearing agent formula

    Richard's formula is fine..is that for 1 liter of stock??..permanent wash is getting too pricey!!

Similar Threads

  1. Ferri and Hipo wash
    By domenico Foschi in forum Darkroom: Film, Processing & Printing
    Replies: 0
    Last Post: 30-Mar-2006, 13:30
  2. wetting agent for color film
    By Mike Boden in forum Darkroom: Film, Processing & Printing
    Replies: 2
    Last Post: 14-Mar-2006, 13:36
  3. Washing agent with printing?
    By brian steinberger in forum Darkroom: Film, Processing & Printing
    Replies: 4
    Last Post: 3-Sep-2005, 08:48
  4. Clearing agent for Type 55?
    By Paul Kierstead in forum Darkroom: Film, Processing & Printing
    Replies: 15
    Last Post: 13-Nov-2003, 11:41
  5. Ferrotype Release Agent
    By Barrie Smith in forum Darkroom: Film, Processing & Printing
    Replies: 5
    Last Post: 6-Jan-2001, 23:55

Bookmarks

Posting Permissions

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