Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,224   Posts: 1,532,659   Online: 867
      
Page 2 of 2 FirstFirst 12
Results 11 to 17 of 17
  1. #11

    Join Date
    Sep 2013
    Location
    michigan
    Shooter
    35mm
    Posts
    40
    Quote Originally Posted by Rudeofus View Post
    Even if you can find a supplier with more affordable prices, and if you can convince the supplier to sell and ship these chems to you, then you still don't have the recipe, and you can bet that Edwal is not going to hand it to you on a platter.

    That is true.

    Because I have found another supplier. But you do or can you help with a recipe of some kind?

    I knew this was not going to be easy, that is why I put the issue to the forum. I hoped, that someone out there could assist.

    Some times I get really "peed" off, because there are millions of us on this forum. The only assistance I see that persons get are from those pushing their own likes and dislikes. With the years and time that have gone by, it is really a surprise to me, that we are stilling looking and have not found the recipes to Fg7, Harvey 777, Hygrain, and a host of other developers and other formulas..., that are 30 or more years old.

    So what does that say about us.


    #1 Son

  2. #12

    Join Date
    Nov 2004
    Shooter
    Multi Format
    Posts
    2,054
    [QUOTE=#1 Son;... Its cost is $1120.00 for 100 grams @ 90% purity, plus shipping and handling

    #1 Son[/QUOTE]

    Holy Crap! That kind of money can buy you an awful lot of metol, sulfite, etc. to make a nice, safe developer.

  3. #13

    Join Date
    Jul 2010
    Location
    Southern USA
    Shooter
    Multi Format
    Posts
    3,769
    Quote Originally Posted by #1 Son View Post
    With the years and time that have gone by, it is really a surprise to me, that we are stilling looking and have not found the recipes to Fg7, Harvey 777, Hygrain, and a host of other developers and other formulas..., that are 30 or more years old.
    Formulas cannot be patented therefore manufacturers hold them as trade secrets. Rodinal is over 100 years old and the exact formula remains a secret. For most people this is not a problem as they realize that an inventor has the right to the profits of his invention. Sorry but this is how the free market works. There are plenty of developer formulas that are in the public domain of many types; one-shot, fine grain, .... It is not like you are being deprived of the ability to develop film. There is no "holy grail" of developers and one would be hard pressed to identify the developer used when presented with only prints. In the end it is the photo that matters and not the method of attaining it.
    Last edited by Gerald C Koch; 06-24-2014 at 09:50 PM. Click to view previous post history.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  4. #14

    Join Date
    Sep 2006
    Location
    UK
    Shooter
    35mm RF
    Posts
    2,637
    Quote Originally Posted by #1 Son View Post
    That is true.

    Because I have found another supplier. But you do or can you help with a recipe of some kind?

    I knew this was not going to be easy, that is why I put the issue to the forum. I hoped, that someone out there could assist.

    Some times I get really "peed" off, because there are millions of us on this forum. The only assistance I see that persons get are from those pushing their own likes and dislikes. With the years and time that have gone by, it is really a surprise to me, that we are stilling looking and have not found the recipes to Fg7, Harvey 777, Hygrain, and a host of other developers and other formulas..., that are 30 or more years old.

    So what does that say about us.


    #1 Son
    It says we don't have a crystal ball or Ouija board.
    So if the formula is not published we won't be able to help.
    I don't use any fine grain formula but there are some in the photo formula books probably just as effective.
    If you need fine grain use Acros, Delta100, PanF, or Tmax100, a fine grain developer won't be as effective as a fine grain film.

  5. #15

    Join Date
    Sep 2013
    Location
    michigan
    Shooter
    35mm
    Posts
    40
    Yes Gerald, you are correct. I am just a little stress. I wanted to succeed at this. And Jim; $1120.00, is a lot of money for less than a half a pound of chemical.

    But my ex-wife and sister, would spend that in 1 minute on perfume at Macy.

    I do not need it. But I do want it. I want to see what it is, and what it is that I can really do with it. The second supplier is asking only $715.00 @ 98% purity, including shipping and handling, out of Ohio. And I do have some formulas that call for its use. Two of them, are from Edward W. Lowe.

    I will be pulling out all of my CD and DVD data disc over the coming weekend and assemble a list of the formulas that I have collected. And as I post them after the holidays, we can see if any comes close to the FG7 formula that I am seeking. Or maybe we can tweak them a little, to see if we can improve on them.

    Oh yes, the "holy grail"..., is my divorce attorney.

    #1 Son

  6. #16

    Join Date
    Jul 2010
    Location
    Southern USA
    Shooter
    Multi Format
    Posts
    3,769
    Here is the formula for Champlin #16 (Edwal 36) which is probably the inspiration for FG-7.

    Water 800 ml
    Sodium sulfite, anhydrous 50.0 g
    Chlorohydroquinone 25.0 g
    Triethanolamiine, te4chnical grade 90% 11.0 ml
    Water to make 1.0 l

    pH 8.5 (FG-7 given as 8.6)

    For use the concentrate is diluted 1+9 with a 10% solution of sodium sulfite.

    It is important to use the technical grade and not the 98% purity as the technical grade contains some diethanolamine which provides the proper pH.

    The MSDS for FG-7 indicates that it also contains hydroquinone. So you might try adjusting the formula to use both. You will have to experiment with the ratio of the two developing agents. I would suggest the equivalent of 10 g of hydroquinone and 15 g of chlorhydroquine to start. This corresponds roughly to the proportions in the MSDS. Of course you would not make up a whole liter to start until you get closer to a working developer that approximates FG-7. Increasing the hydroquinone will increase contrast while decreasing it will lessen it. Whatever you arrive at would be an FG-7 substitute and not actually FG-7. It is perfectly proper to do this. This actually could be fun to try. Let us know if you are successful.
    Last edited by Gerald C Koch; 06-25-2014 at 08:05 AM. Click to view previous post history.
    A rock pile ceases to be a rock pile the moment a single man contemplates it, bearing within him the image of a cathedral.

    ~Antoine de Saint-Exupery

  7. #17

    Join Date
    Sep 2013
    Location
    michigan
    Shooter
    35mm
    Posts
    40
    Quote Originally Posted by Xmas View Post
    It says we don't have a crystal ball or Ouija board.
    So if the formula is not published we won't be able to help.
    I don't use any fine grain formula but there are some in the photo formula books probably just as effective.
    If you need fine grain use Acros, Delta100, PanF, or Tmax100, a fine grain developer won't be as effective as a fine grain film.

    Xmas, I could do as you recommended, but there is no fun or joy in doing something easy. I desire something that I can not get or have. Like trying to go out with the prettiest girl in home room class, or the quarterback's girl friend.

    Thanks Gerald, I will add it to those that I already have. And I will start to experiment when the chlorhydroquione arrives in 7 to 12 days. Plus I received the last 25 grams of my "p-Benzoquinone" purchase today.

    And a many thanks to all those who assisted and commented.


    #1 Son

Page 2 of 2 FirstFirst 12


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin