great work!

does it stain / tan? just curious if the sod. sulfite prevents this.

what would your opinion be about reformulating for catechol ( substituting the pyro )?

have you looked to see if there is any development in A bath?

i ask this because i once tried to formulate a metol only A bath with sod. metabisulfite 6g/Litre as the preservative. i used sod hydroxide as the B Bath. i increased the metol to 18g/Litre (from 8g ... gram by gram ) and only just started to get a faint image. i abandoned that idea because i could think of better formulas that used less metol.

congrats on your formula.