CBRN stands for Chemical, Biological, Radiological and Nuclear defense. These are protective measures taken in situations in which chemical, biological, radiological or nuclear warfare hazards may be present. CBRN defense and awareness consists of CBRN passive protection, contamination avoidance and CBRN mitigation. Well Prepared carries a growing range of CBRN products, including gas masks, potassium iodide, and PPE (personal protective equipment). These products will help protect you and your family from hazardous materials and waste.