To control substance which can be classed as toxic, very toxic, irritant, corrosive flammable, explosive or radioactive
Control the air concentration of Substances with a maximum exposure limit OR or OEL (optimum exposure limit)
Other substances hazardous to health
Biological agents such as micro – Organism, carcinogen (cancer causing agent)
COSSH regulations require employers to ensure that chemicals are handled or used in such a way that no – one is placed at risk, to assess such risk