Hazard Level 3 refers to a medium hazard level of chemicals or biological substances that pose a potential risk to health or the environment.

A classification as Hazard Level 3 means that the substances in question can be harmful to humans if inhaled, swallowed or absorbed through the skin. They can also pose a threat to the environment if they enter the water or soil.

Working with Hazard Level 3 requires special safety precautions and protective measures to ensure safe and controlled work. This includes, for example, wearing protective clothing, using special tools and equipment, and adhering to strict work and cleaning regulations.

In many countries, special regulations and laws issued by the authorities apply to the handling of Hazard Level 3 substances to ensure the safety of people and the environment.