What are the ingredients of the SS agar?

Brilliant green, ox bile, high thiosulfate & citrate concentrations → Inhibit normal flora Sodium thiosulphate → Used as a substrate for hydrogen sulphide production Ammonium iron (III) citrate → Reacts with hydrogen sulphide to form black, insoluble precipitate ferric sulphide Lactose → NLF vs LF (NR)