Getting Closer

[christopher walrath]

To my knowledge it is. Higher contrast paper developer. Like Ilford Universal PQ developer (dimezones/hydroquinones).

 

[timor]

And ?? How it is going ? For tray development get some PQ developer instead of d76.

Isn't PQ Developer for paper?

Could be for paper. The difference between MQ (like D76) and PQ (like ID68) is small. "M" stands for metol, "P" for phenidone. (Q stands for quinol, Kodak name for hydroquinone ). Phenidone is safer as it is not causing allergies as metol does. (Not to everybody, but...). Important for negatives tray development, there will be always some contact.
I am not sure about the higher contrast of PQ paper developers, I think the hydroquinone is taking care of that, but PQ combination is common for warm paper developers. Plus phenidon is much more effective, cheaper and less susceptible to oxidation as metol.
Small info from APUG:
The Ilford PQ variants of ID-11 (D76)