Canada ISED (The Department of Innovation, Science and Economic Development) updates "Guidelines for the Measurement of Radio Frequency Fieldes at Frequencies from 3KHz-300 GHz".
to prevent the occurrence of nerve stimulation (NS), which is defined in terms of internal “in tissue” electric field strength from 3 kHz to 10 MHz
to prevent the occurrence of thermal effects, which is defined in terms of specific absorption rate (SAR) from 100 kHz to 6 GHz as well as power density from 6 GHz to 300 GHz
More information: GL-01 — Guidelines for the Measurement of Radio Frequency Fields at Frequencies From 3 kHz to 300 GHz