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Thread: Hypo-clear

  1. #11

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    Back on-topic:

    Hypo-Clearing Agent or the like is not needed for film, but will reduce wash times somewhat and often helps to remove the pink/purple cast that stubbornly stay in some film. Don't use it if you use a staining developer, since it will remove the stain.

    You don't have to leave the water running for your entire film wash time. Several changes of water with agitation during the wash cycle is equally as effective. (There's a sticky thread on film washing here on APUG somewhere that would be informative!)

    Although Kodak says you can use Hypo Clear and then wash for only five minutes, washing a bit longer will not do any damage.

    Your final soak in distilled water to get rid of the tap water minerals can simply be extended to a few minutes and give you an extra bit of wash.

    The Kodak document linked to above gives you all you need for good processing technique.

    Best,

    Doremus

  2. #12
    RalphLambrecht's Avatar
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    Quote Originally Posted by mporter012 View Post
    See page 2 of this chart. I know it's not a requirement to use, but it cuts down on wash times correct? How does rapid fixer vs regular affect wash times?
    http://www.kodak.com/global/en/profe...bs/aj3/aj3.pdf
    no in theory rapid fixers reduce wash times,because, a rapid fix gives the fixer less time to soak deep into the fibers. the strategy is : strong rapid fixing is better than long weaker fixing.
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  3. #13
    RalphLambrecht's Avatar
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    Quote Originally Posted by Xmas View Post
    confirm temporary if you mean a century or longer
    suggest google 'global warming'...

    everyone knows about reactor accidents and thermo nuclear atmospheric tests but unless it rains in SCalf soon the toilets won't flush and they will only have bottled water to wash with...

    water is too expensive to move, building on flood plains is/was silly, sea levels can change

    the 20th Century was exceptionally wet in some areas

    be happy
    why is global warming always where i'm not?
    Regards

    Ralph W. Lambrecht
    www.darkroomagic.comrorrlambrec@ymail.com[/URL]
    www.waybeyondmonochrome.com

  4. #14
    jnanian's Avatar
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    Quote Originally Posted by mporter012 View Post
    Quick question regarding hypo-clear. I'm doing some at home film development, and want to try using hypo-clear to reduce wash times.

    After developing, stopping, and fixing - I then wash, followed by 1 minute of hypo-clear? How long is it recommended that I wash after using hypo-clear.

    Typically I develop, stop, fix, rinse with city water, and then rinse twice with distilled water in developing tank. If I don't rinse with distilled water after the initial rinse, Chicago water leaves some nasty residue on the film.

    Thanks,

    Mark
    hi mark

    i don't use hypo clear but perma wash ( similar but a little different )
    i fix 2x in separate fix baths for recommended times
    rinse film ( and paper ) for recommended time
    then into the perma wash for recommended time
    then wash out perma wash for recommended time ( sometimes 2x that time if i am paranoid )

    i think for film it is something like 2 mins rinse, 2min perma, then 2min wash,
    double weight paper 5 mins wash &c
    single weight paper, half that ..
    since i can't remember, i consult the package ( not all brands are the same ) .

    the hypo clear is a substance ( sodium sulfate ? ) that grabs free floating fixer/hypo molecules off of your film / paper / water
    and helps you clear your film /paper/ stuff of these molecules that are just hanging out, not doing anything.
    ( it is based on the us navy's using sea water to reduce wash times in ww2, similar stuff )
    just do what the package of your hypo clear says to do and you won't have troubles and it will reduce your wash times.

    http://www.apug.org/forums/forum37/5...ly-way-do.html
    also has info on the soak-method ..

    have fun
    john
    Last edited by jnanian; 03-03-2014 at 08:46 AM. Click to view previous post history.

  5. #15

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    Quote Originally Posted by RattyMouse View Post
    Water is not wasted. It is always in cycle. Unless you are using electrolysis to break apart water molecules. Then water is in fact, actually lost.
    Yes but unless it rains in Aus or SCalfornia their reservoirs will empty cause they were sized too small.

    If they were sized for the 20th century they are or will be too small if the 21st is more typical of normal centuries.

    This is not a new thought 40 years ago one of out eko freaks was on UK national TV dropping plastic bricks into US toilet cisterns cause they were too large.

    Looks like he was correct.

  6. #16
    Mainecoonmaniac's Avatar
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    Going through the California drought, I'm paying more attention to using hypo clear to reduce water use.
    “We are buried beneath the weight of information, which is being confused with knowledge; quantity is being confused with abundance and wealth with happiness.
    We are monkeys with money and guns.”

    ― Tom Waits

  7. #17
    MattKing's Avatar
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    One further point - if you wash in running water, the flow should be very slow and gentle. Kodak's recommendations are to either:

    a) use running water: "Run the wash water at least fast enough to provide a complete change of water in the container in 5 minutes"; or
    b) use a fill and dump regimen: "For rapid washing in a small tank, fill the tank to overflowing with fresh water and then dump it all out. Repeat this cycle 10 times."

    Greg Davis did some very useful work on this very subject, and there is a Stick Thread that reports his results: http://www.apug.org/forums/forum37/8...hing-test.html
    Matt

    “Photography is a complex and fluid medium, and its many factors are not applied in simple sequence. Rather, the process may be likened to the art of the juggler in keeping many balls in the air at one time!”

    Ansel Adams, from the introduction to The Negative - The New Ansel Adams Photography Series / Book 2

  8. #18
    Mainecoonmaniac's Avatar
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    I worked for a graduate of Brooks and now long time friend. He made this film washer out of an old gallon milk jug with holes on the bottom and a tab cut on top. I made one and I've been using it for 30 years. Seems to work well.
    “We are buried beneath the weight of information, which is being confused with knowledge; quantity is being confused with abundance and wealth with happiness.
    We are monkeys with money and guns.”

    ― Tom Waits

  9. #19

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    Quote Originally Posted by Sirius Glass View Post
    The Glen Canyon Dam, which the environmentalists fought but was built anyway, cannot be kept filled and is mostly empty now. It is a good idea to know the real facts, not the faith based facts based on what one had for breakfast before posting.
    There are not any real facts any more you can deny global warming and extreme droughts ever happened in pre history to Peblo people in four corners.

    I use hypo clear followed by three tempered baths and we have too much water but need to use heat to get to 20C.

    Im a statistion, good luck.

  10. #20
    BradS's Avatar
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    Quote Originally Posted by RattyMouse View Post
    Water is not wasted. It is always in cycle. Unless you are using electrolysis to break apart water molecules. Then water is in fact, actually lost.
    It is only useful to think this way in the long term. In the short term, wasted water is just waste....it wastes resources used to clean annd deliver the water and it causes un-necessary hardship (again in the short term).

    I've always used HCA with both film and RC paper specifically because it reduces wash time. To do otherwise is foolish, wasteful and inconsiderate. Please do not waste.

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