An illustrative control system for use with a replaceable ozone generator cartridge for use with an aqueous ozone delivery device, for example, for sanitizing objects, including hands, hands and forearms, feet, other tissue, instruments, or other object sanitizing. One embodiment of the control system calculates and transmits usage data to a memory device of the ozone generator cartridge, and also includes various sensors and drivers for controlling an aqueous ozone concentration. The control system also provides other data logging, error detection, and identity verification of the replaceable ozone generator cartridge.