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 sources121.002105 CMR 121.002Regulatory AuthorityYear: 2026Length: 26 wordsOfficial source The authority for the Department of Public Health to promulgate 105 CMR 121.000 is found in: M.G.L. c. 111, § § 5I, 5N, 5O, and 5P.Previous105 CMR 121.001Next105 CMR 121.003