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airborne concentration "airborne concentration" in relation to a chemical means the quantity of a chemical measured in terms of its volume or its mass in a specified volume of air or the number of fibres, if the physical form of the chemical is fibrous, in specified volume of air which is carried by or through the air;
PU(A) 131/2000 - OCCUPATIONAL SAFETY AND HEALTH (USE AND STANDARDS OF EXPOSURE OF CHEMICALS HAZARDOUS TO HEALTH) REGULATIONS 2000
2. Interpretation |