aminated with organics from rack coatings, additiveorresist breakdown, drag-in chemicals, and even the water supply. Under most conditions about 350 to 600 amp hr per L (1300 to 2300 A hr per gal) is recommended for a PC-600 bath. When the carbon treatment is needed, one of the following procedures should be followed.
If the carbon treatment is for conversion from another brightener system, the tank and anodes should be cleaned and all bags and filters must be replaced with new bags and filters