Ilford Universal Paper Developer for Black and White, 17 fl oz (500ml) #1155091

For film processing applications it is diluted either 1+9 (high contrast) or 1+19 (pictorial contrast) PQ Universal developer is designed for use at ambient room temperatures: 20½C (68½F) Dilute 1+9 or 1+4 for nornmal working conditions; dilute 1+9/1+19 for technical and sheet films