You could ty mixing up traditional Rodinal. Solution A: take 750 ml water at about 52C, add 100gms of p-aminophenol hydrochloride, 300 gms of potassium metabisulfite and add water to make 1 litre. Solution B: Take 300 ml of COLD water, add 200 gms of Potassium hydroxide and cold water to make 400ml. Potassium hydroxide gives off a lot of heat when going into solution - the water could start boiling and splattering. Always add the hydroxide to water (and never water to hydroxide). Use extreme caution.(posted 8492 days ago)When solution A cools, it will form a precipitate. Place Solution A in an iced water bath and with continuous mixing, add 280 ml of solution B until a sudden darkening in colour takes place. Continue adding B drop by drop till most of the precipitate has dissolved.
Good luck, DJ.