Agfa 40
Water @ 125F 750ml
Elon 1.5g
Sod. Sulfite 18g
Hydroquinone 2.5g
Pot. Carbonate 18g
Water to make 1.0L

Agfa used to occasionally do something that made sense and this is one of them ! Here we have a good balance between preservative, developer and accelerator with just enough anti-foggant to keep some order during a long development time.

Although I haven't had time to test this formula, it's next on the list. I strongly suspect that it will give good contrast, excellent sharpness and good speed.

A modification I have in mind would be to split the formula and decrease the amount of pot. carbonate to about 3/4g per liter of developer.

Starting times at 68F are; TMX-100 14.0min.TMY-400 16.0min.