Where's the formula for DS-14

[heespharm]

If it's now on the market and the formula is unavailable I understand
But I'm looking for the ds14 recipe... I checked ryuji suzukis website and it's no up anymore

 

[Gerald C Koch]

DS-14 Paper Developer

Sodium sulfite, anhydrous 12.0 g
Ascorbic acid 6.0 g
Dimezone S 0.2 g
Potassium bromide 1.0 g
Triethanolamine 5.0 ml
Salicylic acid 0.5 g
Sodium carbonate, monohydrate 30.0 g
Water to make 1 l

pH 10.4 +/- 0.2

Use full strength and develop for 1-1/2 to 2 minutes at 20 C.

Triiethanolamine can be obtained from various places that sell photochemicals or from www.thechemistrystore.com. Salicylic acid can be bought from a compounding pharmacy. It is not expensive. Both these chemicals are used as complexing agents to preserve the developer.

I have personally used this developer and it is very good.

All the Ryuji formulas should be in the APUG archives.

 

[heespharm]

Sweet so I have phenidone which can be used to replace dimezone, then u can find TEA from makecosmetics.com and it's half the price than photogs formulary... Last ingredient is salicyclic acid... I'm a pharmacist so that worked out nicely

 

[john_s]

From Ryuji Suzuki's web site, now apparently unavailable, the following from his article on paper developers:

<start of quote>
In DS-14, Dimezone S may be substituted with Dimezone, Phenidone B, or Phenidone in decreasing order of desirability. However, preparation of concentrate may face solubility challange with Dimezone or Phenidone B. Phenidone or Phenidone A provides equal image quality, but with inferior solution keeping property. One work-around is to prepare the concentrate with any of these Phenidone derivatives, and add Phenidone or Dimezone immediately before use.
<end of quote>