Lord Corporation.
- Manufacturers of Magneto-Rheological Fluids and related products.
- http://www.lord.com/tabid/3317/Default.aspx

Dare Instruments
- Manufacturers of kinematic viscometers for used oil analysis.
- http://www.dareinc.com/index.htm

Trilogica - Thermal Analysis and Rheology
- European suppliers of thermal analysers, rheometers, accessories, spare parts and consumables. Also provide training and consultancy services
- http://www.trilogica.com/

Reologica Instruments AB
- Manufacturer of rheology and viscometry instrumentation.
- http://www.reologica.se

Fluid Dynamics, Inc.
- Rheology testing services for fluids and solids using state of the art instrumentation.
- http://www.fluiddynamics.com/

Future Digital Scientific, Asia Inc.
- Surface tension tensiometer, separation and stability analyzer, viscometer and contact angle meter.
- http://www.fdsc.com.tw/

Marimex
- Canadian manufacturer of process viscometers and other in-line fluid analyzers.
- http://www.marimex.cc

Paar Physica USA
- Manufacturers of rheometers and viscometers
- http://www.paarphysica.com/

Freeman Technology
- Instrumentation for characterising dry and wet powders, measuring powder flow and powder characteristics. .
- http://www.freemantech.co.uk/

Bohlin Instruments
- Rheology instruments and viscometers.
- http://www.bohlinusa.com/

Caleva Process Solutions Ltd
- Producing spheronizers, extruders, rheometers and associated equipment for pharmaceutical, neutraceutical, agrochemical and chemical industries.
- http://www.caleva.co.uk/

GÖttfert
- Rheology for the plastics and rubber industry manual, semi-automated and robotic laboratory, as well as on-line and at-line rheometers. There is an American branch.
- http://www.goettfert.com/

Reologica Instruments, Inc.
- Manufacturer of research grade Rheometers for the serious Rheologist.
- http://www.reologicainstruments.com/

Physica Messtechnik GmbH
- Produces and distributes measuring and control instruments for rheology, viscometry and rheometry.
- http://www.physica.de/

Maple Instruments
- Specializing in dynamic mechanical thermal analyzers (DMTA). Rheology services that include new and used instrument sales, rheological sample testing and servicing of most brands of rheometers.
- http://www.mapleinstruments.com/

Anton Paar Gmbh
- Producer of a variety of instruments and contract manufacturer of high-precision mechanical parts; production of the first electronic density meters.
- http://www.anton-paar.com/

ATS RheoSystems
- Produces rheometers and viscometers, dynamic mechanical thermal analyzers, dynamic shear rheometers, and provides rheological applications training and technical service and support.
- http://www.atsrheosystems.com/

Rheology Advantage
- A provider of consulting, testing, research and development services and training in rheology.
- http://www.rheologyadvantage.com/

Research Equipment
- Viscometers and viscosity solution measuring equipment.
- http://www.research-equipment.com/