oxalate developer for soft, luminous negatives with ortho film

I found this recipe in Scovill's Photographic Series and thought it might be useful for working with ortho films - it works wonderfully with Adox Ortho 25 with no loss of speed and yielding great tonality.

A. potassium oxalate 100g
distilled water 400ml

B. ferrous sulfate 50g
distilled water 150ml
sulfuric acid (48%) 3 drops

C. 10% potassium bromide solution

D. 1% sodium thiosulfate solution (that's 1%, i.e. 1g in 100ml water)

A basic developer is...

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