Fann Instrument Company has been the predominate supplier of instruments for drilling fluids analysis since 1939. Their instruments are used in research laboratories and on drilling rigs throughout the world.

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

Many of the instruments and test kits are designed to conform to the testing standards established by the American Petroleum Institute (API) and published in API SPEC 10, API RP 10B-2, API SPEC 13A, API RP 13B-1, 13B-2, 13D, 13I, 13J, and 13K, and they are suitable for field and laboratory use. Some instruments are designed to meet the requirements of the American Society for Testing and Materials (ASTM) as well as other technical specification groups.

Fann is recognized as a leading supplier of sophisticated viscometers and rheometers, which are used in many industries for the measurement of absolute dynamic viscosity of all types of fluids. Fann Direct Indicating Viscometers have been in continuous production for over 60 years. 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 while keeping prices and quality in line.

No one instrument will solve all fluids measuring problems. The Fann product line includes over fifty different instruments and test kits for fluid analysis, including twelve different instruments for viscosity measurement and characterization of the rheological attributes of fluids.

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