Dear PE!!

The prepared solution (1) was clear and developed within one hour a very light/bright yellow tint.
This part looked fine so far. What makes me wonder about is, that solution 2 (with the phenidone in, amber/yellow color)
discolorates if mixed together with solution 1 to form the final developer.

Anyway, we just started a barbeque, will check that later…

Regards, Stefan