EQUIPMENT/Cleaner 20 is a highly concentrated detergent designed specifically to remove chemical scale, hard water scale, dry film and LPISM residue, and anti-foam residue from automated developing and resist stripping equipment. It is employed at a concentration of 5-10% and recirculated through manifold plumbing to assure removal of residue in hard-to-reach areas including unplugging and descaling nozzles. When employed regularly as a means of preventative maintenance, EQUIPMENT/Cleaner 20 ensures cleaner, more efficient developing and resist stripping and will reduce the discoloration of equipment due to dyes used in typical photopolymers.