Standards of performance for film badge services are of general concern to film badge services, users of these services, and regulatory agencies. A quality control program self-imposed by film badge services, but involving all of these groups, is described. Approximately 2,000 film badges were irradiated with various types and energies of radiation. Exposures ranged from 0.002 to 497 roentgens. Film badge services helped design the test procedures, submitted badges for exposure, interpreted exposures, and assisted in determining provisional performance control limits. All services were informed of the test procedures to be used in the test. These error factors are tabulated to show the accuracy of the film badge services tested. Frequency distributions of the error factors served as the basis for selection of control limits used to define acceptable performance. Administrative procedures for periodically evaluating film badge service performance and for recognizing acceptable performance are also described. (Author)