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  1. #11

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    John, one of the advantages of home developing is the quick turn-around -- I am reluctant to "batch process" the film.

    My experience with E6 is that the concentrates last a fairly long time if you use the chemicals one-shot (mixing before use), as recommended by Kodak with its 5 liter kit (I have 7 of them). I started on my first Kodak kit more than a year ago and the results are still good -- the developer, after being mixed, has the light brown color indicative of good solutions. I have heard lots of anecdotal evidence that the C41 chemicals also have fairly good longevity after being mixed. Certainly, my RA4 (Kodak) chems have lasted more than a month after being mixed with little obvious deterioration.

    wn
    Last edited by warrennn; 08-22-2011 at 05:25 PM. Click to view previous post history.

  2. #12

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    C41 flexicolor developer will oxidize in most tanks/jugs after 4-8 weeks, such that it turns very dark color. That's the only solution of the 4 that has a bad tendency to oxidize. The others keep fine (fix, stabilizer, bleach). RA-4 (RA RT) keeps exceedingly well once mixed. even with no special treatment I have a batch of 10L that has done fine for close to a year. C-41 flexicolor developer is much less stable than that, as noted above (And in Z-131 they mention this too).

    The flexicolor concentrates keep well, though. Even in opened bottles, as long as they are topped up with argon/nitrogen or some other inert gas, the concetrates for developer seem to last fine, several months at least.

    I started out using liquid tetenal 5L blix C41 kit, back when B&H still sold it. It was ok - not bad. I did find the separate bleach/fix flexicolor gave better results overall though. And its much cheaper per roll than any other product.

    -Ed

  3. #13

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    Ed, from your previous post, you must use 100 ml of developer per roll of film (48 rolls/5 l --> ~10 rolls/l-->100 ml/roll for one-shot). Does your automated processor use that little per roll? My tanks require about 500 ml per roll and the economics would be not very good if I used it one-shot. Of course, replenishing changes things.

    wn

  4. #14
    Athiril's Avatar
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    Flexicolor turns dark with usage too, I've continued replenishment much longer than 8 weeks in a glass bottle, there's no decrease of activity with semi-regular usage and replenishment.

  5. #15

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    Warrenn

    Yes, phototherm ssk uses 60ml per run and 105 ml per roll, so for 4 rolls ( 1 run), it uses 480ml. I use it One shot as i want the best consistency, but I could do replenishment if needed. But overall the cost of the dev is not bad. I think the flexicolor developer to make 5 gallons, is only $23 or so, which works out to about 12 cents (!) per roll for one shot developer cost.

    Ed

  6. #16
    Tony-S's Avatar
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    Quote Originally Posted by markbarendt View Post
    I'm doing some right now and made up 1.25 liters of developer to do 27 rolls with a tank that needs 570 ml.
    Seriously, you get 27 rolls from 1.25 L? I am trying out the Photographer's Formular Flexicolor kit in the next week or two and it's 1 L. I'd be pleased as punch if I could get 20 rolls, mostly 120, out of it.
    Last edited by Tony-S; 08-24-2012 at 03:53 PM. Click to view previous post history.

  7. #17
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    Quote Originally Posted by hpulley View Post
    Kodak doesn't make it easy for us to buy Flexicolor! I can't get it anywhere in Canada or shipped to Canada so I'm stuck with Tetenal/JOBO blix kits but they seem to work fine for me too. I get 25 rolls per litre (non-replenished) before it dies on me after weeks or even months of use.
    Where are you getting the Tetenal kits from?????
    Paul Schmidt
    See my Blog at http://clickandspin.blogspot.com

    The greatest advance in photography in the last 100 years is not digital, it's odourless stop bath....

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