S-2.1, r. 13 - Regulation respecting occupational health and safety

Full text
139. Measuring devices: For the purposes of this Division, the sound level shall be measured with a Type 2 sound level meter for general use or a Type I sound level meter for precision purposes as prescribed in CSA Standard Specifications for Sound Level Meters Z.107.1-1973.
Devices used to determine predominant frequency bands shall comply with CSA Standard Z.107.5-1975 entitled Octave, Half-Octave and Third Octave Band Filter Sets.
O.C. 885-2001, s. 139.