Fann Instrument Company has been the leading supplier of quality instruments for drilling fluids analysis since 1939. Fann produces and sells a broad array of instruments that help improve efficiency while reducing cost for our customers around the world.

Fann Instrument Company specializes in the design and manufacture of instrumentation for measuring the physical and chemical properties of fluids, especially the measurement of flow and viscosity. Our product line is the most comprehensive offering of instruments and accessories, test kits, and portable laboratories for testing; drilling fluids, completion fluids, fracturing fluids, oilfield cements, and industrial slurries. We also provide reagents, supplies, and replacement parts through a worldwide distribution system.

Our ongoing Research and Product Development program, and over 65 years of continuous production has led to the design of sophisticated instrumentation used for laboratory research, and highly efficient, portable kits used on remote rig sites and other field locations. The basic designs have been proven in years of service to be rugged, accurate and dependable. Manufacturing processes have been upgraded to improve productivity and to reduce delivery time without compromising our quality.