The QUV-T8 is the standard model for either production or engineering applications. A convenient pull out tray could store over a dozen devices. The tray is equipped with anti-static conductive foam. Since the trays are removable, several trays can be used to carry different batches of device types. The erase time will vary according to manufacturer type, as different quality of quartz windows will have varied UV absorption factors.Average erase times are between 10-30 minutes.