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  1. #51

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    Can you shut the device off and then restart it? I don't have a huge volume of spent fixer so i am wondering what the affects would be to start and stop the device when I obtain more spent fixer.

  2. #52

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    Quote Originally Posted by markrewald View Post
    Can you shut the device off and then restart it? I don't have a huge volume of spent fixer so i am wondering what the affects would be to start and stop the device when I obtain more spent fixer.

    hi

    its just a plug in the wall, no on/off switch
    i don't think it would harm much if you turn it off
    before it is "done". those lucite shoe box storage things
    work great as de-silvering containers, and storage containers
    after you are done ..
    silver magnets, trickle tanks sold
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  3. #53

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    over the last few years i have had a poll running asking what people do with their spent fixer.
    it was what prompted me to becoming a distributer / dealer for the silver magnet.
    many years ago i sold similar items ( electrolytic, ion transfer, and evaporation devices ) but they were very expensive, and geared towards
    large labs, medical offices and clinics. unlike what i used to sell, the silver magnet is small, affordable ... and pays for itself quickly.

    over the last few years i have sold many of them, and with your help have
    helped remove some of the silver from the waste stream, and hopefully put a few dollars ( or pounds or euros or ... ) in your pocket.

    a week or so ago i started another poll now that it a few years has passed, and it looks like silver recovery has made inroads, that is always great news ....

    here are a few entries from the poll-thread that i am re-posting to give people an idea of what the silver magnet is all about ....

    Quote Originally Posted by Worker 11811 View Post
    I peeled the label off one of my old bottles of Kodafix concentrate, scanned it and keep the file on my hard drive.
    When I take a bottle to the hazmat place, I print out that label and stick it on the jug with packing tape. I also print out the MSDS and stick it through the handle of the jug when I drop it off. Haven't had any questions yet. In fact, they seem to think I'm the one being a fussbudget.

    Remove the silver from your fixer using a Silver Magnet. It's just a little plastic box with holes in it to let the liquid in. Inside the box are a sheet of metal foil and a long rod shaped electrode. You get a little "wall wart" electrical transformer that connects to a cord coming out of the plastic box. You plug it in, drop it in your fixer bucket and leave it alone for a few days. There are two LEDs on the transformer. A red and a green. At first, the green one lights. After the silver is removed from the liquid, the red light starts to glow. That's how you know you're done. Dump/recycle the desilvered fixer. Wash off the Silver Magnet cell with clear water, dry it and put it away for the next time you want to use it.

    The first time I used the Silver Magnet, it took a little over a week to pull all the silver out of 2-1/2 gallons of used fixer. I weighed it before putting it to use. It weighed a hair over 75 grams. When I pulled it out, it weighed almost 100 grams. That's 25 grams or 0.9 ounces of silver I got back. Right now, the price of silver is hovering at around $30 to $32 per ounce. At the rate I'm going, one more use will have paid for the Silver Magnet but the cell won't nearly be full. I think I should be able to get ten uses out of it before it gets full.

    When it finally gets full, my Silver Magnet will have paid for itself five times over.

    Quote Originally Posted by jnanian View Post
    hi randy

    some of the lights are a little wonky on the magnets ... i usually tell people when the stuff they plate
    starts getting "dark" ( instead of greyish, it is dark-greyish / blackish ) it is time to turn it off
    because they are plating other "stuff" not just the silver ... as long as they stick it in a non-metalic container
    when they run it they are good to go, a metal container will end up electro-plated silver ...

    oh, your magnet will hold around 32troy oz of silver on it, it would have paid for itself 12-13 times over if you let it get real-full

    have fun !
    (and thanks ! )
    john


    Quote Originally Posted by Worker 11811 View Post
    So, let's round off and say 30 oz. of silver at $30 per.

    $900 return on a $50 investment ain't too shabby. Is it?

    Yes, I noticed the lights aren't perfect but you can still tell.
    When you first connect a clean cell to the wall wart, the red light glows brightly. When you submerge it in the fixer, it is barely aglow.
    As the silver gets pulled out of the fixer, the red light gets a bit brighter.

    I also watch the color of the silver building up on the plate. It looks like sand. About the color of sand, too.
    I pulled mine out when the sand started getting darker.

    My darkroom is in the basement. I can look in every so often as I go down to do laundry and stuff. The intensity of the light will give me enough information to know when to go look at the condition of the "sand" inside the cell.

    feel free to PM me if you have any questions about the magnet or any other silver recovery questions ( i sell other things too ),
    i am usually around and if i don't know the answer/s i will be happy to find out !

    john
    silver magnets, trickle tanks sold
    artwork often times sold for charity
    PM me for details

  4. #54
    Greg Davis's Avatar
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    I am looking at getting one of these for the university darkroom I teach at. How can I tell when it is full and needs to be replaced? We go through a lot of fixer and silver since we collect all fixer used in film, printing and color processes.
    www.gregorytdavis.com

    Did millions of people suddenly disappear? This may have an answer.

    "No one knows that day or hour, not even the angels in heaven, nor the Son, but only the Father." -Matthew 24:36

  5. #55
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    Quote Originally Posted by Greg Davis View Post
    I am looking at getting one of these for the university darkroom I teach at. How can I tell when it is full and needs to be replaced? We go through a lot of fixer and silver since we collect all fixer used in film, printing and color processes.
    You are sitting on a gold mine! (silver mine) haha. I actually have a few large containers of fixer in my teaching darkroom as well.

  6. #56

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    A few question about Silver Magnet

    Hi John and all,

    I could have sent PM to you, but I think it's better to post here for collective knowledge benefit.

    And in fact, the questions are for all of APUGers that are silver chemistry savvy.

    I bought a Silver magnet a little more than a year ago, and I have a few question, now with the past experience :

    - As I don't produce a high spent fixer throughput, I store the used fixer in a container, waiting to have enough to worth desilvering. This container, usually in plastic, with the time, get plated with grey sludge, that I presume to be silver sulfur. Does this deposit reduce significantly the amount of silver that can be extracted from the fixer ? Is another type of container (glass ?) should be used ?

    - after the first use of silver magnet, I got a thin yellow-grey layer of Ag onto cathode. Then, I unplug the silver magnet, rince it with clear water, and let it dry until next use. The following time, I constated that the layer changed color, becoming grey-black. I presume it's oxydation of silver, the same thing occuring when letting silverware forks to the air. Does this oxydation affects the Silver Magnet function ?

    Many thanks for your help

    Best regards,

    Raphael
    Last edited by Raphael; 10-30-2012 at 07:12 PM. Click to view previous post history. Reason: forgot something

  7. #57

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    hi raphael

    i can answer the 2nd question ...
    i do not think there is a problem at all.
    the magnet just allows electricity to flow through
    the spent fixer to plate the silver onto the cathode.
    as long as there is enough silver in the fixer there won't be a problem
    otherwise it will smoke and smell like sulphur and burn out the magnet.
    when you send it to be refined, they take into account
    that there is a little oxidation i would imagine that is why
    they suggest the silver on the cathode isn't 100% pure silver ..

    i don't really have an answer to your first question but a guess and a suggestion ..
    maybe you can experiment and see if it makes a difference
    if/when you use a glass container.
    i save my spent fixer in black 1L jobo containers
    and a 3 quart tupperware plastic container before i
    run it through the magnet i have never seen the sludge you have mentioned.
    maybe i don't save mine as long so it doesn't have the same time to precipitate ?

    i look forward to reading what others have to say !
    john
    silver magnets, trickle tanks sold
    artwork often times sold for charity
    PM me for details

  8. #58

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    Thanks John

    Hi John,

    Many thanks for your quick answer !

    I am glad that this oxydation doesn't affect the Silver Magnet good function. However, I noticed the used fixer I stored have already a strong sulphur smell, when opening the storing container, and that odor persists during all the time I let the Magnet on, I hope I didn't burn the cathod !

    About the deposit in the storing bottle, maybe you are right about the time, because the fixer stayed here several months.

    BTW, I hope all is OK for you, I read in another thread you are in NYC.

    Best regards,

    Raphael

  9. #59

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    hi raphael i am happy i could help
    things are OK here, i am about 3 hours from NYC
    in RI we got lots of wind and some rain, but nothing like NYC ...

    if i can help anymore let me know
    i will ask the maker too ...

    john
    silver magnets, trickle tanks sold
    artwork often times sold for charity
    PM me for details

  10. #60

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    20% DONATE THANKS APUG !

    THROUGH MARCH

    20% OF ALL MAGNET AND SILVER RECOVERY "STUFF"
    DONATED DIRECT TO APUG+SEAN
    silver magnets, trickle tanks sold
    artwork often times sold for charity
    PM me for details

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