Viscometers

Prescott Instruments have manufactured viscometers in the UK for over 25 years, focussing on the rubber, polymer and elastomer industries. The type of viscometer most used for rubber is the Mooney Viscometer, whereby a rotor rotates at 2 revolutions per minute (RPM) within a heated, closed cavity filled with uncured rubber. Every instrument has been specifically designed to meet the needs of modern rubber testing laboratories, with ergonomic design features, advanced functionality and industry leading Labline software. 

Explore The Mooneyline Range

Prescott Instruments Mini Mooney Viscometer
Mini Mooney Viscometer
The Mini Mooney Viscometer is a compact instrument with a footprint of less than 0.1m2. Suitable for small to medium laboratories with lower testing throughput, the Mini MV tests for Mooney viscosity and Mooney scorch in accordance with leading industry and international standards.
Prescott Instruments Mooney Viscometer
Mooney Viscometer
The Mooney Viscometer is a flagship instrument in the rubber industry that has been used to test the viscosity of uncured rubber since its invention by Melvin Mooney in 1933. The Mooneyline MV is a high-performance instrument that is suitable for testing at all stages of the rubber production process and on a variety of elastomeric compounds.
Prescott Instruments Mooney Viscometer Variable Speed
Mooney Viscometer Variable Speed
The Mooney Viscometer Variable Speed is an advanced rubber viscometer that features an adjustable rotor, delivering variable speeds from 0.1 to 20 revolutions per minute (RPM). This additional functionality is key to producing fully comprehensive data when testing challenging compounds.

Mooney Viscometer Comparison

 Mini Mooney ViscometerMooney ViscometerMooney Viscometer Variable Speed
Test CapabilitiesMooney Torque
Mooney Scorch
Mooney Torque
Mooney Scorch
Stress Relaxation
Area Under the Curve
Mooney Torque
Mooney Scorch
Stress Relaxation
Area Under the Curve
Linear Speed Variation
SoftwareLabline LiteLablineLabline
Test PointsMax. 6 per testUnlimitedUnlimited
StandardsISO No. 289 / ASTM D1646ISO No. 289 / ASTM D1647ISO No. 289 / ASTM D1648
CalibrationIntegralFully automaticFully automatic
Temperature RangeAmbient to 225 °C
± 0.03 °C
Ambient to 225 °C
± 0.03 °C
Ambient to 225 °C
± 0.03 °C
Rotation Speed2 RPM (0.21 Radians/Sec)3 RPM (0.21 Radians/Sec)Varied 0.1 to 20 RPM

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