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Ilford Hypam/Ilford Rapid Fixer have been the only fixers I've used since the early 70's. Very economic if you use the 5 litre version, good capacity and keeps well.
Ian
Nathan, the fixing and washing times for Hypam/Ilford Rapid fixer are short too
Oh, yeah, but not *as* short. Oh, and its capacity is a bit lower.
-NT
It's important to me that my paper fixer doesn't smell, ...
It seems to me that ammonium thiosulfate is ammonium
thiosulfate, so one might as well buy the cheapest fixer
available. It seems that the only qualities to buy on
are price, capacity, and keeping ability.
Kodak's Flexicolor Fixer and Replenisher. Cheap as dirt and just as good, if not better than, Ilford's Hypam, Rapid Fixer, or any other B&W rapid fixer on the market.
Ian Grant said:Oh, yeah, but not *as* short. Oh, and its capacity is a bit lower.
-NT
That's true TF-4's recommended capacity is less than Hypam's at a similar dilution.
Hypam 24 rolls 35mm film per litre / TF-4 20 rolls of film.
Hypam 80 10x8 RC prints per litre / TF-4 60 10x8's
Hypam 40 10x8 FB prints per litre / TF-4 30 10x8's
The recommended Fix times are identical for papers, and slightly longer for films with TF-4
Ian
Only 24 rolls of 35mm? Just asking but it seems it should be more in line with the 8x10 quantity you mentioned of 80 as there is less film to process in a 35mm roll, 24 ct than there is in an 8x10 sheet.
AFAIK, there is no industry standard for determining
capacity. There be no standard then specified capacities
have no meaning. I believe most fixers run at or close to
60%. Some suppliers may be 'cutting'. Trust the numbers.
Of course capacity is dependent upon keeping qualities.
Real world conditions of use are the test of keeping quality.
Now I ask you, have ANY suppliers provided information as
to a fixers keeping qualities under actual use conditions. For
example rapid fixers go bad just sitting unused. And that
includes sealed concentrates. How bad, how fast?
Ammonium and sodium thiosulfate, alone, are odorless.
I'm not in the same rush some are and my volume of
work is low. So, I use the solid, good for ever
concentrate, sodium thiosulfate. Dan
The clip test as described is perfect for determining both the fixing time for fresh fixer and for assessing when the fixer should be discarded. However there is one crucial factor missing. The type of film used for the initial test should be the same for all subsequent tests. Different films show different clearing times. Test with something like TMax and you're looking at 3 - 5 minutes clearing time with fresh rapid fixer. Foma films can clear in as little as 60 seconds.
The same fixers that I use.Ilford Hypam/Ilford Rapid Fixer have been the only fixers I've used since the early 70's. Very economic if you use the 5 litre version, good capacity and keeps well.
Ian
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