Defect remedy:
In service pitting usually occurs due to inadequate anodic film thickness for particular environment. Poor quality of the (soft) anodic film. Lack of regular cleaniing or maintenance of the anodic finish in service. Over pigimentation in black electrolytic coloured finishes. Check the quality of the make up water (mains / tap water) in the different tanks. The max amount of chloride should be 50 ppm to avoid chloride pitting. Rinsing tanks should not be used as buffer tanks for the flight bars waiting to be anodised. Desmut tank is the correct tank to use as buffer tank.)