Recognising different hazard symbols, i.e.

Recognising different hazardous substances that cause injury by:

Inhalation, causing damage to lungs, or asthma, e.g. from dusts, vapours.
Skin contact, causing dermatitis, skin cancer, e.g. from absorption of chemicals through the skin or via cuts.
Ingestion, this is less common e.g. chemical poisoning
Definition and types of substances hazardous to health in the workplace.
Health effects of hazardous substances and their causes
COSHH assessments and control options.
Responsibilities imposed by the Control of Substances Hazardous to Health Regulations 1999.

The assessment should identify? What is the known effect of the substance on a person? What are the known long and short-term effects on that person? How the substance is used, who by and for how long?

Are any existing precautions being taken and how effective are these? If these precautions fail, what exposure is likely to occur?

If there is an accidental spillage, what exposure is likely and to whom?

Prevention