jonathan_reynolds Posted August 25, 2003 Share Posted August 25, 2003 A while back, someone posted a note in another thread, to the effect that Emofin-processed film fared better if no stop-bath was used. Can anyone tell me why this might be? [i've tried to correspond with the original author by email, but failed.] Link to comment Share on other sites More sharing options...
lex_jenkins Posted August 25, 2003 Share Posted August 25, 2003 Some developers contain sodium carbonate. In contact with an acid stop bath a gas can be formed. If the gas is formed in or on the delicate film emulsion the bursting gas bubbles can leave permanent marks. I never use an acid stop bath unless development times approach 5 minutes, in which case a few seconds can make a significant difference. Even then I'll use an acid stop bath only if there is no recommendation against it. For example, total development times for Diafine are a mere 3-5 minutes in each of Parts A and B but the maker specifically recommends against using an acid stop bath. Typically I use plain (actually, filtered) water and agitate for 30 seconds after emptying the developer. Works well enough. Link to comment Share on other sites More sharing options...
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