lupacexi Posted September 4, 2018 Share Posted September 4, 2018 Hi eveyone, I have been searching for times for fixing using TF-4 I will be developing in HC-110 dil. H film Acros 100 7.5 minutes First how long to fix and second how long for rinse. Thanks. Link to comment Share on other sites More sharing options...
kmac Posted September 4, 2018 Share Posted September 4, 2018 These links might be of assistance ... Photographers' Formulary TF-4 Archival Rapid Fixer 03-0141 B&H! TF4 Fixer. 1 Link to comment Share on other sites More sharing options...
Wouter Willemse Posted September 4, 2018 Share Posted September 4, 2018 I've used TF-4 only with Pyrocat developed, but I doubt that shouldn't have any impact on fixing times. I stuck to 8 min. fixing with fresh fixer. Rinsing afterwards, I use the 'normal' Ilford schedule to wash followed by a wash in photoflo for a couple of minutes. Link to comment Share on other sites More sharing options...
Alan Marcus Posted September 4, 2018 Share Posted September 4, 2018 Time in the fix is a variable. Best way to discover the correct time is to run a simple test. Save snippets of film, I retain the tongue (leader) of the 35mm cassette. Prepare the chemicals of the process and pour off a tiny sample of the fixer in sauce cup just big enough to allow you to half submerge the snippet. In normal room light, immerse the snippet and watch as the fixer goes to work. The film goes in opaque and after a time turns milky then transparent. The action you see it the fixer dissolving the silver salts.that are the light sensitive goodies. Time this action. The proper fix time, no matter what is twice the time it takes for the solution to clear the film. By the way, the chemistry of fixation is based on 45 to 70 seconds for photo papers and 2 to 7 minutes for black & white negative films. 4 Link to comment Share on other sites More sharing options...
Martin Rickards Posted September 8, 2018 Share Posted September 8, 2018 There are basically two types of widely used fixers based on sodium thiosulphate and ammonium thiosulphate. Fixing times are different for the two with sodium thiosulphate based fixers always taking longer. The sodium salt is usually supplied in crystals and the ammonium salt in the form of a concentrated solution. http://imaging.kodakalaris.com/sites/prod/files/files/resources/edbwf.pdf Link to comment Share on other sites More sharing options...
William Michael Posted September 4, 2019 Share Posted September 4, 2019 Member who posted the OP has been deleted and banned. Spammer. William Link to comment Share on other sites More sharing options...
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