Ilford Bromophen is a phenidone/hydroquinone developer supplied in powder form. 

Suitable for dish/tray developing all RC and FB black and white photographic papers, it is made into a stock solution that is diluted 1+3 for use.

Bromophen gives a slightly warm image tone with most papers and is particularly recommended for dish/tray developing Multigrade Warmtone RC and FB papers to get the warmest image tone.