That isn't even remotely close to the formula I come up with using the Darkroom Cookbook and its weight to volume conversions. Is this a working solution? I should have clarified that mine was for stock, to be mixed 1:2 or as you prefer
...to clear whites a bit if I need. As long as you are relatively consistent, you'll have a developer that mixes easily and acts the same every time. I've got balance beam scales and digital scales for more precise things, but I don't need them for mixing D-72 or ID-62.
Hope this helps,
Doremus
...assured of a fresh and fully-active developer every time you mix.
I mix mine with spoon measures; takes 5 minutes, tops and is EZPZ.
I like ID-62 even better, but you need BTA in solution for that and phenidone; a tad bit more complicated to mix. D-72 takes the cake for ease of use...
Here is the Sino Promise statement:
http://www.sinopromise.com/content/info/id/62/navId/10.html
"After more than 30 years of hard work in the imaging industry, and after many negotiations, Sino Promise Group formally reached an agreement with Kodak Alaris in June 2020 to acquire the global...
I mix Ilford ID-78 which is the warm-tone version of ID-62 essentially the difference is ID-78 has no Benzotriazole and a little extra Bromide, ID-62 has less Bromide but Benzotriazole to ensure Neutral tones. ID-78 was sold as a powder developer it's successor is Harman Warmtone developer but...
I imagine that print PQ print developers like ID-62 and Bromophen were originally variations on MQ developers, with the Metol replaced by phenidone. Then the image tone was adjusted to give a desired result (likely matching tones already achieved and preferred with MQ developers) by adjusting...
Yes, Doremus, using a weak Farmer's after the fact tends to work wonders. There really is a reason why it has traditionally been called Photographer's Gold.
But, your substitution explanation (PB vs BZ) needs explaining. OK, maybe the substitution which you present is viable, but there ARE...
...print developers use BTA (BenzoTriAzole) along with potassium bromide to offset the warmish tone the developer gives the prints (ID-62, Bromophen, etc.) I'll often add a bit of BTA to my print developer to cool print tone a bit and clear the whites, often in conjunction with added carbonate...
...another 2/3 stop exposure (i.e., rate the film two film-speed numbers slower), make a few negatives and print them.
FWIW, I use Bromophen (or ID-62 mixed from scratch) and Foma 111 (along with many other papers) all the time and get good blacks.
Remember, black in a print is easy, just...
This Ilford PAN 100 has expired somewhat recently.
- The developer Fuji, was used. - 166 ml was diluted from the developer and water was added to one liter, and the pH was set to 8.5 - it was developed for 4 minutes at a temperature of 21.
@mohmad khatab:
Which film is this? What was the dilution?
It's going to be a pain transforming the developer you have into another developer. You can look at ID-62 or some such universal PQ developers and see if by adding you can get close to any of them.
...of losing activity. Thoughts about throughput, capacity and shelf-life would be welcome.
FWIW, I'm using either D-72 or (more often now) ID-62 these days. I mix a working solution according to the directions (1+2 from stock for D72, 1+3 from stock for ID-62) and use it till it starts to...
...see any apparent ill effects from the extra carbonate.
I've been thinking of experimenting with BTZ especially in MQ formulas, but I have the ID-62 formula in my notes, so I may try that as well. I've found other threads on cold tone developers, but the general consensus seems to be that...
ID-62 is supposed to be similar to Bromophen. The formula has both potassium bromide and benzotriazole, the BTZ being there to cool the image tone to neutral. I like the image tone with the standard formula, but one can change the ration of bromide to BTZ to adjust image tone if desired...
I just noticed that I made a mistake in converting the Sodium Carbonate from monohydrate to anhydrous. The formula calls for 80g monohydrate per liter of D-72 stock. For some reason I used 90g of anhydrous when it should have been 68.4g anhydrous per liter. Given the solubility of sodium...
Nope, the chemicals can be fine and still get precipitate. Actually, you may dissolve everything and get crystal clear solution using tap water and within minutes notice the formation of cloudiness, which later becomes precipitate. If you use sodium sulfite, carbonate, or hydroxide, or the...
...impurities in your stock chemicals. Just filter them out before use. FWIW, my D-72 mixes up without a precipitate and I use moderately hard tap water for mixing. It all depends on the purity of your raw chemicals. Heading down to the darkroom to mix some ID-62 in just a minute.
Best...
I agree, Doremus. One has to wonder how such a defective product could pass quality control checks. Of course, many companies now seem to think the consumer *is* part of their quality control team. Their attitude is, "Ship it and see if the customers complain. If they don't, then it's good."...
...turn out brown and frothy. I mix both D-72 (Dektol without the fancy sequestering agents, etc. that allow it to be packaged in one bag) and ID-62. If you like Dektol, D-72 performs identically. I mix down-and-dirty with measuring spoons.
Disclaimer: I own triple-beam balance scales and...
The problem here is that a PQ variant of an MQ developer is inherently warmer and that caused Ilford issues when they switched a PQ version of ID-20 (powdered) in the mid 1950, there were complainants about changing image tone/colour. As a result they reformulated as ID62 dropping the Bromide...
If I compare warm tone to cold tone print developers, these rarely differ in their sulfite content. If you compare neutral tone developer ID-62 with warm tone developer ID-78, their sulfite contents and recommended dilutions are identical. Rafal references an experiment by Ian Grant here...
...the weights of the un-named made little sense, then in a spreadsheet I realised the ratios of Hyroquinone, Metol, and Sulphite were the same as ID-62 and that they had added Potassium Carbonate and Sodium Hydroxide in place of Sodium Carbonate which matches the PQ Universal MSDS sheet. You...
It's true and it was exclusive to contax latest models I think.
I think it can make difference where critical focussing is necessary like maybe macrophotography.
But, draw your conclusion after reading the test on Pop Photo Sept 91 Page 62.
If you are busy, you can read only the 3 paragraphs...
Dear @koraks and @Arklatexian ,
Many thanks for the quick and insightful responses. (For some reason, I did not receive email notifications on post replies. Thus, kindly accept my delayed acknowledgement and thanks.)
I understand from the guidance above, and some further reading, that it would...
Tom, I tend to print slightly differently with Neutral papers which is something I don't do often. I would typically use a different developer ID-62 (PQ Uninversal) which is the Neutral equivalent of ID-78, the extra Bromide in a warmtone developer will change the curve although I tend not to...
...well that works on other papers because I was primarily using Forte PWT and that work was rudely interrupted by its untimely demise.
I used ID-62 as the starting point and tweaked it due to suggestions from Richard Knoppow and others back in the pre-apug days on rec.photo.darkroom, where you...
...My mixture was one part and lasted forever like Ansco 130. It also gave results indistinguishable from BW-65, to my eye.
I actually used ID-62 as the starting point and added glycin to that, and tweaked restrainers
> Ilford ID-62
> Water (at 125F)...
Don't quarrel guys :)
Some posts upper I cited _quantitative_ data about stability of ID-62 with phenidone (= phenidone A = 1-phenyl-3-pyrazolidone) in a hermetically stoped jars from the russian scientific photography school. ID-62 did not change their properties for as minimum as 8 months.
...(mixed stock not working dilution), so no extreme concentration. I'm basing that on ID-20 once sold as a powder develop, and the PQ version ID-62, Ilford's current PQ Universal liquid developer is approx 2x5 time as concentrated and use Potassium Carbonate and Hydroxide in place of the...
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