Industrial Hygiene Audit helps to assess and assure every personnel is working under safe and healthy environment. Use of chemicals are indispensable in several industries and toxic substance emission may arises without handling appropriately. Toxic substance may define as chemical fumes, vapours, metallics dusts, airborne organic and inorganic compounds. These may cause severe health effects and illnesses and therefore important to evaluate the possible exposure of toxic substance in compliance with Ministry of Manpower (MOM)’s Regulations.