In the processing of poultry, equipment, instruments, apparatus andor water used in such processing, andor carcasses andor parts of poultry resulting from the processing of poultry, are disinfected with aqueous solutions of certain halogen-based microbiocides, especially certain bromine-based microbiocides. Copies of this patent with color drawing will be provided by the Office upon request and payment of the necessary fee. The activation light source activates probes of at least one probe subset of photo-sensitive luminescent probes, and the readout light source causes luminescence light from the activated probes. A latch mechanism is operable for releasably retaining the foldable support mechanism in the deployed state. Consequently, the second software module uses a result of the first software module to determine if the first safety goal has been completed, and the second software module uses at least one algorithm to verify an operational status of the first logical unit.