2000RT is a liquid concentrate developer/replenisher recommended for use with all types of black and white RC photo paper processors. It is easy to use as no starter solution is required. The recommended dilution for both the tank and replenisher solution is 1+4. It is a robust, economical, clean working developer with a long tank life. It can be used at a wide range of developing temperatures, 20-40°C (68-104°F). With most papers it gives a print image tone just slightly cool of neutral.