Recent content by Formulahunter

The original manufacturer of bot Ilford and Jobo chemistry seems to be Chugai https://www.chugai-photo.co.jp/english/products/chugaiphoto/ they share the same address with ilford japan whos in the msds

It contains N-Methyl-Ethanolamine-Sulfite with about 50g/l. That is certainly enough sulfite.

Just take into accou t that adox just braught tree clones of former tetnal products to the market... Also TT used to produce most if not all kodak chemistry until the mid 2010s. So the one who has TT's recipes also has all of kodaks. Including the original hc 110.

Have you tried ordering material? I was able to get some 35mm Film from them not far in the past.

feel free to post updates about the availability, and if they are willing to sell you small amounts.

Does anyone have a reliable source for Kodak Bulk Ektachrome in europe? Since Elokuvakonepaja has gone out of bussines, its been hard to find. On B&H its also not in stock. looking forward to any tips and repys {Moderator note: this post was originally a separate thread, but because it...

Osiris Film, a chinese company came out wit a half automated Film processor a few years ago. Probbably a clone of a Jobo ATL1500 or smth. similar. Does anyone know if they are still around?

unfortunatley i cannot edit the post anymore. With the low solubility of the freebase, you'll find many souces only write 40%DTPA meaning the 5Na salt of course.

For the concentrates I just did the math for now. But the I use the recipe with SBC for PBC and PB for SB for quite a time by now and had great results with it. (They are just more readily available to me) Its well known that you can use Potassium and sodium salt pretty much interchangeably if...

I made a table for the concentrates mentioned on Koraks blog for Photo engineers Formula Concetrate A: Developer Concentrate HAS 2,41 g/L 241,00 g/L make to 1L Concentrate B: Potassium carbonate anhydrous 34,30 g/L 245,00 g/L...

One must keep in Mind that when Kodak releases a product it must be as bulletproof as possible. And even if in only .1% of the Cases the fenton reaction takes place due to the user having a high iron content in the Water, or whatever, Kodak will try to mitigate that Issue. And so should they...

Hunt was a american chemical manufacturer, that had Plants in europe. Then it got bought by Fuji. they called that part of the Bussines Fuji hunt. In 2017 Heidelberg printing mashines took over a Part of that Bussines from Fuji, but idk if this takeover included the chemical manufacturing.

is there a way to check the Bromide concentration? Otherwise how can you tell how much Bromide to add when doing replenishement? I have read, it is possible to just add new Brode when its used.

the question was mostly out of curiosity. The fact that with a 'normal' bw development process you'll probbably get bigger variation from run to run is to be assumed.

my though also was, that if one can't see any differece, then the superadditive effects may oversaddow the differenece in isolated activity. Also this might be a hint that the main development comes from the Dimezone, and the ascorbate 'recharges' the phenidone. Even though the XTOL patent says...