Talk:E-6 process

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Contents 1 Source of Formulas 2 temperature Units 3 Moving 3 bath hack to the discussion page? 4 Still a work in progress 5 Solutions for the Watkins chrome brew formula

[edit] Source of Formulas

The recipies and formulas probably belong elsewhere (not in Wikipedia?) -- Egil 20:35, 17 December 2005 (UTC)

Yes. But can someone claim copyright on that ? Ericd 21:24, 14 March 2006 (UTC)

Not sure if copyright can be claimed, as the formulas are available publicly. The original source should still be cited though. htmlguru4242

I think its some ISO standard now ? Ericd 19:05, 17 May 2006 (UTC)

[edit] temperature Units

The temperatures aren't in proper Celsius SI units, and this makes it very difficult to interpret as my grandparents died about thirty years ago. Ian Tindale 09:12, 29 May 2007 (UTC)

The process specification is actually in F degrees asit was speced out in the USA. Feel free to add the SI equivelents in brackets cmacd 12:49, 29 May 2007 (UTC)

[edit] Moving 3 bath hack to the discussion page?

Any comments on moving the three bath Tetenal hack to this page? Discpad 00:23, 26 August 2007 (UTC)

[edit] Still a work in progress

Hang in there: I still need to edit some more, especially the fixer formula, since ammonium thiosulfate is needed for the more vigorous fixing action. Discpad 02:03, 26 August 2007 (UTC)

[edit] Solutions for the Watkins chrome brew formula

I moved the formulas here, because although they will (barely) work, they produce erratic results. Discpad 01:18, 26 August 2007 (UTC)

Warning: The ferricyanide bleach in the Watkins recipe .^[1] will cause excessive dmin in the film without a clearing bath and may hurt the image. Ektachrome films were designed to go through a Ferric EDTA bleach instead.

Caution: The phenidone-hydroquinone developing agents are Not Recommended, because they cause color crossover, bad grain, poor sharpness, and so on.

Note: A Sodium Thiosulfate fix will not be strong enough for E6 films without using very long fix times - Stick to commercial ammonium thiosulfate fixer, which is both inexpensive and plentiful.

Ingredient Amount First developer Sodium hexametaphosphate (Calgon) 2.0 g Sodium sulphite, anhydrous 39.0 g Potassium carbonate, anhydrous 14.0 g Sodium bicarbonate 12.0 g Phenidone 0.6 g Hydroquinone 6.0 g Sodium bromide 2.2 g Sodium thiocyanate 1.0 g Sodium hydroxide 3.3 g Potassium iodide, 0.1% solution 4.5 ml Water to 1.0 litre Stop bath 1 Sodium acetate, anhydrous 30.0 g Acetic acid, glacial 6.0 ml Water to 1.0 litre Colour developer Sodium hexametaphosphate (Calgon) 2.0 g Trisodium phosphate crystals 36.0 g Sodium hydroxide 3.0 g Sodium sulphite, anhydrous 4.5 g Sodium bromide 0.65 g Potassium iodide 0.1% solution 30 ml Sodium thiocyanate 1.3 g Citrazinic acid 1.25 g CD3 11.0 g Water to 1.0 litre

Ingredient Amount Stop bath 2 As for Stop Bath 1, but do NOT interchange them after use Bleach Potassium ferricyanide 80.0 g Potassium bromide 20.0 g Disodium phosphate, anhydrous 12.0 g Acetic acid, glacial 5.0 ml Water to 1.0 litre Fixer Sodium thiosulfate, crystals or anhydrous 200.0 g 125.0 g Sodium sulphite, anhydrous 5.0 g Sodium metabisulphite 0.5 g Water to 1.0 litre Stabiliser (optional) Formaldehyde, 40% 5.0 ml Wetting agent 1.0 ml Water to 1.0 litre