COVID-19 Disinfection
Terminal wipe-down should be the primary method of disinfection. Germicidal UV equipment at 253.7 nm can be useful for secondary disinfection but no one should be in the room while the equipment is being used as there could be potential photochemical induced eye and skin hazards.
The most conservative threshold limit value for germicidal UV which is in the UVC range is 3 mW/cm2. Effects are cumulative with time. Consult EHS for a hazard assessment.