Okay I finally went to play around with another split bath out of curiousity.

Image (quick colour balance), the sharpness and grain are pretty good for this film (made in Japan Agfa Vista 400)

Bath A
Pinch of Sodium Sulphite
CD-2 – 9g/L
Sodium Sulphite – 9.6g/L
Sodium Bisulphite – 0.54g/L

Measured pH 7.1

Bath B
Potassium Carbonate – 50g/L
Potassium Iodide – 1.4mg/L
Sodium Thiocyanate – 220mg/L (I’m sure my thiocyanate needs drying out too btw).

Detail crop

Out of focus grain crop