Western Instrument Company manufactures precision engineered veterinary instruments including syringes, dehorners, restraints, O.B. equipment, equine dental equipment, and specialty electronic devices just to name a few. Proud to feature products made in the USA.

Dr. J.N. Huff, a graduate of the Kansas City Veterinary College, moved to Denver, CO in 1922 to open a satellite manufacturing plant to the original "American Serum Company" founded in Sioux City, IA. Denver’s high altitude provided hogs with enriched blood, so Colorado was considered an ideal environment for producing a new antiserum for Hog Cholera. In 1923, the small Denver plant began production and shortly thereafter separated from American Serum to become Colorado Serum Company. Hog Cholera was eventually eradicated from the United States. Colorado Serum Company went on to expand its product lines to include a full range of large animal biologicals, large animal veterinary instruments, veterinary diagnostics, specialty products, and laboratory reagents. The facilities now cover 22 acres in Denver and contain all manufacturing as well as administrative offices. Products are marketed and distributed by numerous animal health companies across the globe. Colorado Serum Company is proud to be a 4th generation family-owned company, on the cutting edge of modern science while continuing the valuable and time honored traditions of personal and responsive service.