Bromide dependence in nondestructive testing radiographic processing

To produce a good-quality image on x-ray film, it is important to maintain the optimum level of bromide in the developing solution. The bromide level affects density and contrast, which in turn affect overall image quality as measured in terms of resolution, graininess, and sharpness - or simply penetrameter visibility. A given developer may be profiled as to the relative level of optimization achieved over a range of bromides as measured in g/L. A regeneration/replenishment system sustains the development activity by flushing out excess bromides and by renewing other ingredients. Replenishment ensures that the volume is consistent. It is relatively easy to balance the regeneration rate versus square area of film density; it is somewhat more difficult to balance replenishment to compensate for loss of developer through evaporation and use