Request InfoGigahertz-Optik Inc.The X1-1-UV-3727 handheld radiometer provides a real time display of irradiance or dose and includes a peak-hold function. The device may also be operated via its USB interface with optional S-X1 software. Each meter is supplied with a traceable calibration certificate from the ISO-17025 accredited Gigahertz-Optik optical radiation calibration laboratory. Far-UVC light, for example 222 nm produced by Kr-Cl excimer lamps, has been shown to effectively inactivate bacteria but with less photobiological hazard for humans. 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