Response to Tech Pan Developing Question for Martin Tai

If I may add.....

Rodinal 1:100 6'/68F EI 12

Ethol TEC 1:15 6'/68F EI 40-50

C-41 developer, 9'/68F EI 12

Those will all work ok and don't require the finicky agitation scheme of Technidol in order to get good evenness.

The addition of a little sodium sulfite (10g/L) _may_ give a little more speed than plain old Rodinal; it does with faster films but I've never tried it with TP.

You can buy sodium sulfite via any camera shop that stocks Kodak and Edwal chemicals and would be willing to order you some if they don't have it; otherwise it's available from Calumet, B&H, Photographers Formulary etc.

If you try it for TP and don't like it or it doesn't do anything you haven't wasted your money; you can make HCA by dissolving a level tabelspoon of sodium sulfite (about 20g) in a quart of water; use as you would any other hypo-clear wash aid.

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