Ok. Its good I dumped it then. And I just bought a fresh new bottle of fixer on Saturday too. What is plating out?
What is this?
What is plating out?
elemental silver; this is pure silver. Congrats! You are into precious metals now. You could investigate silver recovery units and sell the stuff, but don't give up your day job quite yet!
I developed a roll of Fomapan 400 (Arista EDU Ultra) and after that roll, I noticed my fixer was quite black, with black flakes sedimenting on the bottom of my cup. I poured it all out and you could see the black flakes on the sink bottom. What is this? Does this mean I should have pre-rinsed my film?
Don't reuse fixer, use it one-shot. May be overcautious but this way you're not ruining any film...
Its weird because even the most recent films I did look completely clear with no fog. Oh well. I'll try to mix up a fresh batch. I didnt think I did that many films in this fixer batch, though it has been sitting for quite some many months inside a capped/ sealed 1L container.
For me 500ml hypo fixer works for 10 reversed BW films. Then I change it. Last couple of films just need a minute or two longer fix time.Don't reuse fixer, use it one-shot. May be overcautious but this way you're not ruining any film...
many months
Fixer can (seemingly) 'topple over' virtually instantly.
Its weird because even the most recent films I did look completely clear with no fog.
Don't reuse fixer, use it one-shot. May be overcautious but this way you're not ruining any film...
Don't reuse fixer, use it one-shot. May be overcautious but this way you're not ruining any film...
For me 500ml hypo fixer works for 10 reversed BW films. Then I change it. Last couple of films just need a minute or two longer fix time.
This is wasting fixer. Not needed and not a good idea.
That's one of the painful lessons I learned as well
In 30 years that I develop and reverse films I've never ever had one single problem using the fixer one-shot.
Yeah, that's not a great idea, obviously.
Fixer can (seemingly) 'topple over' virtually instantly. What happens in reality is that the sulfite present to protect the thiosulfate from oxidation gradually is turned into sulfate through the influence of oxygen. At some point, the sulfite gives out and then the thiosulfate starts to degrade. At this point, the fixer (with its suilver-thiosulfate complexes and all) becomes chemically unstable and as a result, things can go south seemingly very rapidly all of a sudden. In reality, the decay is gradual, but it's a kind of metastable system, which makes it seem more instantaneous than it really is.
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