US lawMassachusettsRegulations105 CMR — Department of Public Health105 CMR 121.00 — To control the radiation hazards of lasers, laser systems and optical fiber communication systems utilizing laser diode or light emitting diode sources121.017105 CMR 121.017Expiration of Notice of RegistrationYear: 2026Length: 11 wordsOfficial source Each certificate of registration shall expire on the date stated therein.Previous105 CMR 121.016Next105 CMR 121.018