Danaher is a company that designs, manufactures, and markets professional, medical, industrial, and commercial products and services. It operates through three segments: Life Sciences, Diagnostics, and Environmental and Applied Solutions. The Life Sciences segment offers instruments and consumables that are used by customers to study genes, proteins, metabolites, and cells, in order to understand the causes of disease, identify new therapies, and test and manufacture new drugs and vaccines. The Diagnostics segment provides analytical instruments, reagents, consumables, software, and services in the areas of the clinical lab, critical care, and anatomical pathology diagnostics. The Environmental and Applied Solutions segment delivers water quality and product identification equipment, software, services, and consumables.