My first experience with two bath development.
See for more details about the process the excellent explanation on the website of
Moersch-photochemie
First developer:
Lith A 45ml. Lith B 45ml. + 900ml water + 100ml old lith
Second developer:
Polychrome Siena 50ml
Additive Carbonate 25ml
Additive Cloride 50ml
Water 1000ml
First I made a proof with different exposures:
44, 36, 26, 16
Paper: Fomabrom 123
First developer: 3 min.
Second developer: 2 min.
The difference between 16 and the rest is big.
The difference between 44, 36 and 26 is not that big.
Tulip-2

Paper: old Record Rapid (maybe this paper
has a bit of a veil but
I like it anyway)
Exposure: 40sec on F/4.5
First developer 3 min.
Sec. developer 2 min.
7 Tulips
Paper Foma 123
Exposure: 40sec on F/4.5
First developer 5 min.
Sec. developer 2.30 min.
I ad 10ml D to the Siena bath
Left Paper: Record Rapid only the lith bath for about 5 min.
Right Foma 132
Ilford multigrade
As you see not so equal.
Paper Foma 123
Exposure: 40sec on F/4.5
First developer 4.30 min.
Sec. developer 2 min