and there is a buildup of halides to contend with.
I understand. And this is ALMOST how a proper replenished system should work. The seasoning brings byproducts to the aim concentration. But prior to that it would also be necessary to dilute the developer slightly, to lower the developing agent concentration to what will become the equilibrium concentration. Then it could immediately be brought into a stable condition, with developing agent and byproducts at some nominal equilibrium concentration. But the downside is that it is not the same as single-use Xtol. A different animal, so to speak.
In my view a self-replenished system is really something of an uphill battle. I think a better design goal would be to select some sort of developing solution to start with, and the design should include some concentration of development byproducts. The point of having them in there is so that you could control them via dilution with replenisher. This would determine the required rate for the replenisher. Then it would be a matter of finding what concentration of developing agent is needed, at that replenishment rate, to balance out the avarage amount of developing agent consumed. I'm not saying that this is easy to do, just that this is probably a better-controlled approach. Of course there are other things going on, such as some amount of evaporation as well as developing agent being oxidized by the air. Plus the need to keep preservatives at a steady level, and a controlled pH level.
Actually not true.
and there is a buildup of halides to contend with.
Yikes, Unique Photo needs to fix that. I use 6'30" with my Jobo, with a pre soak, with fresh chemistry. I usually develop 4 to 6 rolls per liter of 1st developer then toss. I spent about $300 on the regular Fuji Hunt E6 in commercial sizes. I will probably end up throwing out some of it, but the fixer can be used for both E6 and C41, the bleach lasts forever etc.Wait... From the page linked above: "The Fuji E-6 1st developer or replenisher has a processing time of 6 hours (5 to 7 hours spread)." -- did someone mistake hours for minutes, or is E-6 a LOT slower than I thought? Or is that "processing time" how long it takes them to pick it from their warehouse and ship it (compared to multiple weeks for Flexicolor LORR C-41 Devloper and Replenisher)?
I've used ansco 130 like that ...Agfa/Ansco 130.
I'd use ansco130 1:6 for film and extract 100c of developer and replenish with 1:6 for every roll processed with it, I never process 1 roll or 1 sheet at a timeI don't get it, Juan. For film, you'd dilute that 1+9 (same as Dektol/D-72) and you wouldn't normally attempt to store a solution at that dilution, never mind replenish it. It certainly doesn't seem it would be useful for film in stock strength where self-replenishment might be attempted.
did it work well ? the RS was the good stuff, the non-RS was non-good. the two used to confuse the RIT grad students who answered the pro-phones at EK back in the 90s when it came out. they told me ( and I am sure others ) to use the NON RS for sheet film, BOO HISS. ruined it all with dicrotic fog, and then they couldn't didn't know out how to remove the fog .. I had to call Local Heros at SPRINT to learn to use Farmer's Reducer (of course sold by EK. LOL ). good times!The lab I worked at in the '90's used TMax RS as a self-replenishing developer.
I don't think it's being made any more.
Kodak has never, AFAIK, offered a starter for Xtol (giving seasoning instructions instead),
Does the sprint replenish indefinitely?
I can't remember, I stopped using it when I ran out of $$ and started to sell off gear and started to use GAF UniversalDoes the sprint replenish indefinitely?
It is, but it is only packaged in large (IIRC, 25 litre) cubitainers that are totally impractical for individual users.The lab I worked at in the '90's used TMax RS as a self-replenishing developer.
I don't think it's being made any more.
The X-Tol instructions describe how to use a variety of different starters, as follows:Kodak has never, AFAIK, offered a starter for Xtol (giving seasoning instructions instead), but they have, over time, for a number of other replenished developers (including Flexicolor, which is kind of the gold standard here aside from Xtol -- replenisher plus starter to make a new tank solution, and in LORR format, 25-35 ml per roll depending on exact format and emulsion type, capable of running for multiple years and tens thousands of rolls in a 5L solution batch).
Were the Knights Templar involved?The real 777 used a special kind of water. I’m not at liberty to discuss this further. I may have already said too much.
I understand. And this is ALMOST how a proper replenished system should work. The seasoning brings byproducts to the aim concentration. But prior to that it would also be necessary to dilute the developer slightly, to lower the developing agent concentration to what will become the equilibrium concentration. Then it could immediately be brought into a stable condition, with developing agent and byproducts at some nominal equilibrium concentration. But the downside is that it is not the same as single-use Xtol. A different animal, so to speak.
In my view a self-replenished system is really something of an uphill battle. I think a better design goal would be to select some sort of developing solution to start with, and the design should include some concentration of development byproducts. The point of having them in there is so that you could control them via dilution with replenisher. This would determine the required rate for the replenisher. Then it would be a matter of finding what concentration of developing agent is needed, at that replenishment rate, to balance out the avarage amount of developing agent consumed. I'm not saying that this is easy to do, just that this is probably a better-controlled approach. Of course there are other things going on, such as some amount of evaporation as well as developing agent being oxidized by the air. Plus the need to keep preservatives at a steady level, and a controlled pH level.
XT-3 is at least as good if not better, but not yet easy to get in the US. Ideally
Yep, I got XT-3 and 2 bottles of Adox FX-39 II . Adox has nice packaging, dust control. I like it.Was looking through Freestyle's website today and they have XT3 in stock, listed as new.
Do not over think the problem: Add 70ml/roll stock XTOL and then pour the used replenished XTOL is full. Tightly cap the bottle and discard the rest. The XTOL is highly trained so you do not have to worry about diluting out part of the solution. It works while you sleep soundly at night.
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