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Thread: Temperature management

  1. #1

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    May 2020
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    Temperature management

    Hi, I developed BW-film at home without any problem and now I'm about to start developing my own colour slides (E6). I was wondering how to keep the temperature as close to the desired temperature as possible? Started looking for some sort of "heating device" and so far I only came up with this thing used in fish tanks but the temperatures on that are too low.

    Any ideas or recommendations?

  2. #2
    Tin Can's Avatar
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    Dec 2011
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    Re: Temperature management

    sous vide is used by some, I don't do colour

    others will pipe up shortly

    welcome to the forum
    Tin Can

  3. #3

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    Apr 2020
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    Re: Temperature management

    Sous vide circulator. Keeps temperature, and stirs the water. Makes a nice steak, too, if that's something you care about.

  4. #4

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    May 2020
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    Re: Temperature management

    Quote Originally Posted by Tin Can View Post
    sous vide is used by some, I don't do colour

    others will pipe up shortly

    welcome to the forum
    Thanks, still searching my way in LF :-)

  5. #5

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    May 2020
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    Re: Temperature management

    Quote Originally Posted by grat View Post
    Sous vide circulator. Keeps temperature, and stirs the water. Makes a nice steak, too, if that's something you care about.
    Thanks for the tip, I had absolutely no idea what that was called. So that's one steak and a couple of 4x5's coming up ;-)

  6. #6
    Drew Wiley
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    Sep 2008
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    SF Bay area, CA
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    Re: Temperature management

    Are you using a drum or what? Basic: use a big enough passive surrounding water jacket to prevent much change during the dev time. Better: purchase something like a Jobo tempering box. Fancy and expensive, but far more precise: buy a thermoregulator from a scientific lab supplier. Take your chances: aquarium heaters and similar kitchen devices.

  7. #7
    Foamer
    Join Date
    Oct 2010
    Location
    South Dakota
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    2,430

    Re: Temperature management

    I have put together a color chemical kit, Stearman SP-445, a Hadineeon sous vide, and a plastic tub, about 2-3 gallon capacity. Plan is to keep the chemicals and the SP-445 in the water bath for even temperature. The color processing chemicals will permanently stain, so if using a kitchen counter I'm putting down a lot of plastic to cover it.


    Kent in SD
    In contento ed allegria
    Notte e di vogliam passar!

  8. #8
    Roger Thoms's Avatar
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    Jun 2007
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    San Francisco, CA, Flagstaff AZ
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    1,607

    Re: Temperature management

    My Anova Sous Vide, beats my Jobo TB-1 hands down for temp control. The Jobo has to drop about a degree before it kicks on and then has to rise about 2 degrees before the heating element turns off. It also lacks water circulation. Older unit, so maybe the newer ones are better or maybe Jobo has a better model that I'm not aware of. The Anova happily holds the temperature with in 0.2 degrees, plus having the water circulation is a nice plus. I have the 750 watt model which is more than adequate.

    Roger

  9. #9

    Join Date
    Apr 2020
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    300

    Re: Temperature management

    Same here on the Anova Nano.

    Side note, I heat up an extra 1L bottle with filtered water for use in the pre-soak and wash steps. By doing that, I pretty much eliminate the need to keep the developing tank in the hot water-- the plastic holds heat well enough that the 3.5 minutes for developing isn't an issue, and if there's a drop during the blix stage, I haven't noticed any effects in the results (if anything, the Blix seems to generate a small amount of heat-- I keep having to let the excess air out).

  10. #10

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    May 2020
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    Re: Temperature management

    Quote Originally Posted by grat View Post
    Same here on the Anova Nano.

    Side note, I heat up an extra 1L bottle with filtered water for use in the pre-soak and wash steps. By doing that, I pretty much eliminate the need to keep the developing tank in the hot water-- the plastic holds heat well enough that the 3.5 minutes for developing isn't an issue, and if there's a drop during the blix stage, I haven't noticed any effects in the results (if anything, the Blix seems to generate a small amount of heat-- I keep having to let the excess air out).
    Great tip, tnx.

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