Designated Substance 3
Designated Substance 3 : A biological, chemical, or physical agent specified as a designated substance by a regulation made under the Occupational Health and Safety Act of Ontario. Designated substances are substances that are known to be particularly hazardous. The use of a designated substance in the workplace may either be not allowed or strictly controlled by law. An OSH glossary used in safety and health at work which is, adopted by ILO