Donald, it took longer than I expected. I ended up using a 12% Stock Solution of NaOH in Deionized Water as the alkali and two 1% Stock Solutions: Catechol and Hydroquinone in Ethylene Glycol - no sulfite or bromide - as the developers. Here are some results for 120 roll Kodak Tech Pan. The working developer is 3 parts Q or C stock soln plus 1 part NaOH stock soln plus 100 parts deionized water. Stand development in a tank was for 20 min. at 70 deg. F. Here are the densities for Hydroquinone:

Visual Blue Channel
.03 .03
.12 .16
.33 .41
.48 .62
.60 .74

The results for the Catechol developer are similar.

Visual Blue Channel
.12 .15
.35 .42
.48 .55
.60 .67
.71 .79