Gammadot use a Reologica StressTech HR research spec. high resolution controlled stress rotational rheometer, & a Reologica Viscotech controlled stress rotational rheometer to perform a variety of rheological tests, ranging from constant rate viscometry to oscillation strain control as functions of deformation rate, time or temperature. For more information on the measurement principles click HERE. These rheometers provide a highly sensitive and accurate method of determining discrete changes in properties such as molecular weight & molecular weight distribution caused through thermal / physical / Chemical degradation. The instruments have extensive temperature ranges and can be run isothermally or thermally ramped, (StressTech HR: -100°C to +400°C and ViscoTech: -10°C to 400°C). For this reason these machines are an intrinsic part of our quality control & failure analysis services.

The rheometers are equipped with a wide selection of modular cone & plate, plate-plate & coaxial cylinder measurement systems providing the flexiblity to characterise materials ranging from highly filled / high molecular weight polymers to low viscosity solutions / oils & pastes / weakly structured materials. A disposable plate-plate measurement system is also available to use in conjunction with the rheometers. The disposable plate system is ideally suited to the characterisation of corrosive and curing polymeric systems. It’s wide range of applications cover key parameters such as melt stability determination, thermal degradation studies, measurement of cure kinetics and the characterisation of polymer solutions containing aggressive chemicals or solvents.

In the Summer of 2007 Gammadot Rheology became the UK location for demonstration of Reologica rheometry equipment, as supplied by Infra Scientific Ltd, sole UK distributor of Reologica AB's quality rotational rheometer range. Infra Scientific Ltd remains the primary supplier of new equipment, parts, calibration & servicing for the Reologica range of machines, with Gammadot providing additional support in the way of rheometer demonstration, contract testing and consultancy. If you are interested in a visit to Gammadot to see an instrument in action please contact either Graham Thomas or Mark Edwards and we will do our best to organise a date that suits your schedule.

Reologica StressTech HR High Resolution Controlled Stress Rheometer Disposable Plate / Plate Measurement System Reologica ViscoTech Controlled Stress Rheometer

Our Rotational Rheometry Expertise Includes:


Shear Viscosity Versus Shear Rate/Time/Temperature
Oscillatory Rheometry Versus Frequency/Time/Temperature
Yield Stress Analysis (Inc. Sub Zero° Low Temp. measurements)
Cure Kinetics/Melt Stability/Thermal Degradation Studies