Holographyforum.org / holowiki.org

Greetings,

Could anyone confirm the type of Phenidone that is to be used in SM-6 developer, is it type A or B (Methyl-Phenidone) as the more sources I check the less I know... there seems to be a lot of discrepencies out there on the exact formulaes. Unless both are ok to use?

Same question stands for the Quephe and the RCA developers.

Thank you
Loic

They both work. "B" is said to give longer lifetime to the developer.

Ah thank youy Bob, that's perfect, even more so since B is cheaper