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  1. #21
    Jim Noel's Avatar
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    Jim,
    I use a magnetic mixer to mix all solutions.
    Ipurchase ferric oxalate form B&S and mix it in distilled water for sevral minutes. I then turn of the ixer and let is settle for a minute or two , then turn it back on. By the time all chemicals are added most are mixed. The rest usually dissolves sitting quietly over night in the bottle.

    By the way, some one mentioned they used boiled water. Boiling water concentrates any material which happens to be in it because the water boils away first.

    Jim

  2. #22

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    I use a magnetic mixer also. It has a heater in the base also. Its the only way to mix!

    Steve
    The soul never thinks without an image.
    - Aristotle

  3. #23

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    Quote Originally Posted by jimgalli
    I boiled all the minerals out of it. Distilled. jg
    It is my understanding you don't boil the minerals out. You distill the clean water off.You gotta still? Steam is clean which means the same minerals are now concentrated in a smaller volume of water. You can get rid of oxygen but not minerals by boiling.

  4. #24

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    After looking at the recipie I think I will stir up some ink on a check and send it to the formulary. Or call me up when you do it so I can come over and watch you go thru it once. John

  5. #25
    jimgalli's Avatar
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    Quote Originally Posted by vet173
    It is my understanding you don't boil the minerals out. You distill the clean water off.You gotta still? Steam is clean which means the same minerals are now concentrated in a smaller volume of water. You can get rid of oxygen but not minerals by boiling.
    Yes, I have a still. That's what I meant. I'm using steam distilled water.
    He is no fool who gives what he cannot keep..to gain that which he cannot lose. Jim Elliot, 1949

    http://tonopahpictures.0catch.com

  6. #26
    Photo Engineer's Avatar
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    Sounds like fun, but I'll stick to silver halide emulsions.

    The still can be used for other distillations as well. Just as long as there are no lead lines or seams, the resulting material would be usable for anything, even something you wanted to drink.

    ~grin~.

    PE

  7. #27

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    Quote Originally Posted by jimgalli
    Yes, I have a still. That's what I meant. I'm using steam distilled water.
    Cool. I didn't understand it that way. My grandma in the Ozarks had one also, but I don't think any emulsion would have survived it.

  8. #28
    Gustavo_Castilla's Avatar
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    Ferric Oxalate Nightmares.

    Quote Originally Posted by jimgalli
    I just want to throw my experiences out there to see if they are extremely abnormal or about the same as what other folks are seeing regarding mixing this troublesome goo.

    Here's my "normal" procedure. I use a 1 cup Pyrex graduate to mix in. This gives plenty of room for elaborate stirring without spilling. I'm trying to make a 27% solution so it's 15 grams ferric oxalate powder, 1 gram Oxalic acid, 55ml distilled H2O. I make a "water bath" in a 1 quart Pyrex and put the 1 cup pyrex in the water bath. I heat the water bath with one of those coil things that has an electric element inside for re-heating coffee. When my distilled water gets steamy (around 200+ or - degrees F I add the Feric Oxalate. I stir a bit, then I add the Oxalic acid. Then I stir for about 1 1/2 hours. It's a PITA.

    What I end up with is something like a 20% disolved solution which is useable. I have sludge that never ever does go into solution. I let it settle at the bottom of the bottle and try not to worry about it.

    When I print, I have to use far more FO than the "recipes" call for. For instance an 8X10 would be 20 drops FO to 13 drops Pd Pt etc.

    What am I doing wrong? What are you all experiencing? This stuff seems to be a nightmare to me.

    BTW the powder I'm using was purchased from Artcraft Chemicals about 6 years ago, has been stored properly, and has always reacted just as it does now. I have no reason to believe it was a bad product.
    Keep it simple Jim
    the easyes and best wat to myx this is as follows :
    get a brown glass bottle (the size you plan to mix start small)
    Put the DESTILD Water IMPORTANT you do not want contaminents Iron or flouraite.
    add the powder close tight and place in back or fron packet of YOUR pants and take it with you for a hick or just keep in packet the Warm of you body and constant agitation generated by walking will give you a good result!!
    ask Kevin at BS
    Hope this helps
    Gustavo Castilla
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    but by the views we take of them.
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  9. #29

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    Hi Jim,

    Start with 120 degrees F distilled water. I do not use the oxallic acid. Add the FO and mix for about 5 minutes. Continue to mix every 5 min or so, for 15-20 minutes. Transfer to brown bottle. If you can through the day shake the bottle on occasion. Should be fine in 24 hours.

  10. #30
    photo8x10's Avatar
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    Hi,
    Instead of oxalic acid, what do you use?

    Best

    Stefano Germi
    Italy
    Digital is Slow..........Analog is ROCK!!!!

    Visit me at http://www.stefanogermi.com
    Visit My Portfolio in Apug

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