CBRN canisters are specialized filters designed to protect individuals from chemical, biological, radiological, and nuclear threats. These canisters are typically used in gas masks or respirators to filter out harmful substances in the air, such as toxic gases, aerosols, and radioactive particles. CBRN canisters are essential for emergency responders, military personnel, and individuals working in hazardous environments to ensure their safety and well-being in the event of a CBRN incident.