Rheoline MFR Lite

Utilising a new generation In-line Servo Motor coupled with digital servo drive technology, the Rheoline Multi-Function Rheometer Lite is complete with our Labline Lite software to ensure the highest standards precision of analytical and statistical data of elastomeric properties.

The Multi-Function Rheometer Lite is capable of fulfilling tasks of both a Moving Die Rheometer (MDR) and a Dynamic Shear Rheometer (DSR). The instrument can be used firstly at lower temperatures and frequencies to study the process of polymers, secondly as a standard MDR and thirdly as a dynamic mechanical analyser to evaluate the cured properties of materials. (See modes of operation).

The temperature control of the dies gives an impressive variation of ± 0.03 °C from the set point. Should you require temperature assistance for operations like a Temperature Sweep, an Air Cooling System comes as an available upgrade or included in our Multi-Function Rheometer.

This instrument comes with a set of pre-programmed tests and allows full flexibility giving the user complete control of the test stages. The Labline Lite software offers:

  • A wide range of test conditions (see ‘Parameters Calculated’)
  • A maximum of 10 ‘Test Methods’ (Unlimited Option Available)


Prescott Instruments have developed its own unique patented technology; an automated belt system designed to convey rubber samples into a test chamber, ensuring that the material under test remains in contact with the dies and reduces slippage.


We have a couple of additional upgradable options that include: A pressure module or our efficient forced cooling system. These are both included in our standard Multi-Function instrument or can be added to an existing MFR Lite instrument.

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Modes of operation
Tests can be in the form of any of its modes of operation or a combination.

  • Frequency Sweep
  • Temperature Sweep
  • Strain Sweep
  • Standard MDR Mode
  • Pre-set test Specifications
  • Conditioning
  • Combination (Linked) Tests

ISO 6502 / ISO 13145
ASTM D5289 / ASTM D6048 / ASTM D6204
ASTM D6601 / ASTM 7605
DIN 53529

Forced Cooling
Optional Upgrade

Pressure Module
Optional Upgrade

Temperature Range
Ambient to 250 °C
± 0.03 °C

Oscillation Frequency
0.001 Hz to 50 Hz

Oscillation Amplitude
± 0.001 ° to 360 °

As our commitment to you, our Multi-Function Rheometer Lite is complete with everything you need to perform dynamic, accurate and efficient elastomeric compound testing.

The provided PC comes pre-installed and calibrated with our most advanced data acquisition and analysis Labline Lite software.

  • Microsoft Windows ® OS PC (Monitor, keyboard and mouse)
  • Labline Lite Software
  • All peripheral cables and connectors
  • Essentials spares package
  • Free technical support (one year)


The Multi-Function Rheometer Lite is supplied with the latest computer hardware, pre-installed with our most innovative data acquisition and analysis Labline Lite software for Microsoft Windows ® OS.

The Lite version licenses a maximum of 10 ‘Test Specifications’ with any number of test points. The software is also complete with a calibration module.

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Key Features

  • Automatic Pass/Fail Result
  • Laboratory Statistics
  • Multilingual
  • Simple Instrument & Test Configuration
  • Pre-loaded Test Specifications
  • Produce Trend charts
  • Easy Result Recalculation
  • Report Printing Capabilities
  • Supports ODBC Database Connections:
    – Microsoft Access ®
    – Microsoft SQL Server ®
    – IBM DB2 ®

Data Calculations

Test Methods

  • Standard Cure (MDR mode, non isothermal)
  • Strain (Sweep LAOS)
  • Payne test
  • Stress Relaxation
  • Frequency Sweep
  • Conditioning
  • Linked tests any combination of test method and any duration

All Test Methods have an unlimited selection of data points on all channel curves.

Test Points
Labline Lite comes with an extensive range of test points:

Minimum (ML)Maximum (MH)
Scorch (TS)Cure Percentage
Minimum (True)Maximum (True)
Time GateCure Gate
ReversionCure Rate
Cure Rate TimeCure Rate Value
Delta CureDelta Cure Time
Max. Percentage
Frequency GateFrequency Gate (Rev)
Strain GateStrain Gate (Rev)
Temperature GateTemperature Gate (Rev)


  • Elastic Torque
  • Viscous Torque
  • Tangent Delta
  • Cure Rate
  • Temperature (Upper)
  • Temperature (Lower)
  • Pressure in Cavity (optional upgrade)
  • Complex Torque
  • Loss Angle
  • Storage Modulus
  • Loss Modulus
  • Complex Modulus
  • Storage Compliance
  • Loss Compliance
  • Complex Compliance
  • Real Dynamic Visc.
  • Imag. Dynamic Visc.
  • Dynamic Complex Visc.

Units of measurement

  • Time: secs, min:sec, min.dec
  • Temperature: °C, °F
  • Torque: dNm, Inlbs, kgcm
  • Pressure: kPa, Lbs/In2, Kg/cm2 (Optional)
  • Cure Rate: InLbs/s, dNm/min, InLbs/min, dNm/s
  • Angle: °, rad
  • Frequency: Hz, CPM, rad/s
  • Strain: %, rad arc
  • Modulus: kPa
  • Compliance: /MPa
  • Dynamic Viscosity: kPa.sec

The response of a specimen to a sinusoidal deformation can best exhibit the dynamic properties of an elastomer. The elastic component of the elastomer is responsible for the in-phase stress, while the viscous component is responsible for the out-of-phase stress. The amount by which the strain response lags the resultant of the two stresses (in-phase and out-of-phase) is known as the phase or loss angle, δ. The more viscous an elastomer is, the greater the phase or loss angle. The tangent of this angle “tan δ,” in the simplest terms, is the ratio of the viscous modulus to the elastic modulus.

Elastic Torque, S′
The peak amplitude torque component which is in phase with a sinusoidal applied strain.
Loss Shear Modulus, G′′
The ratio of (viscous) peak amplitude shear stress to peak amplitude shear strain for the torque component 90° out of phase with a sinusoidal applied strain. Mathematically, G′′ = [(S′′/Area)/Peak Strain]
Viscous Torque, S′′
The peak amplitude torque component which is 90° out of phase with a sinusoidal applied strain.
Complex Shear Modulus, G*
The ratio of peak amplitude shear stress to peak amplitude shear strain.
Mathematically, G* = [(S*/Area)/Peak Strain] = (G′² + G′′²)^1/2
Complex Torque, S*
The peak amplitude torque response measured by a reaction torque transducer for a sinusoidal applied strain. Mathematically, S* = (S′² + S′′²)^1/2
Loss Factor, Tan delta
The ratio of loss modulus to storage modulus,or the ratio of viscous torque to elastic torque. Mathematically, tan delta = G′′/G′ = S′′/S′
Loss Angle, delta
The phase angle by which the complex torque (S*) leads a sinusoidal applied strain.
Dynamic Complex Viscosity, n*
The ratio of the complex shear modulus, G*, to the oscillation frequency in rads/sec.
Storage Shear Modulus, G′
The ratio of (elastic) peak amplitude shear stress to peak amplitude shear strain for the torque component in phase with a sinusoidal applied strain.
Mathematically, G′ = [(S′/Area)/Peak Strain]
Real Dynamic Viscosity, n′
The ratio of the loss shear modulus, G′′, to the oscillation frequency in rads/sec.

Conforms to:

  • ISO 6502 / ISO 13145
  • ASTM D5289 / ASTM D6048 / ASTM D6204 / ASTM D6601 / ASTM D7605
  • DIN 53529
Die System: Rotor-less, Biconical, Sealed System
Die Gap: 0.45 mm nominal
Oscillation Frequency: 0.001 Hz to 50 Hz
Oscillation Amplitude: ± 0.001 ° to 360 °
Temperature Range: Ambient to 250 °C
Maximum Heat Rate: 80 °C/min
Temperature Control: 3 term PID, control accuracy to ± 0.03 °C.
Optional: Pneumatic optimised cooling system
Torque Device: Reaction transducer in upper platen
Torque Range: 0.001 to 250 dNm
Cavity Volume: 4.5 cm³
Pressure in Cavity: 0.001 to 10 kN
Calibration Device: Torsion spring
Closing System: Soft closing to reduce breakage of film and distortion of sample
Drive System: In line servo-motor and Aerotech digital controller
Fitted Cooling System: No (Optional Upgrade)
Electrical: Single Phase 220/240V 50Hz | 110V 60Hz | 350 VA
Pneumatics: Filtered Air, Min: 0.41 Mpa | 60 psi | 4.14 Bar | 4.2 kg/cm
Weight: 248 kg
Dimensions: 575 mm x 570 mm x 1280 mm (W x D x H)

It is strongly recommended that samples are prepared with an automatic Volumetric Sample Cutter.

Our Rheoline VSC can be relied upon to provide consistent samples of volume and size to be inserted into the die cavity.

Rheoline VSC

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