Montech Mooney viscometer


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ISO 289:2005 ASTM D 1646 DIN 53523 BS 903: Part 58 AFNOR T43-00/005 BS 1673 GOST 10722-76 JIS K6300 TGL 25-689

A rotational shear viscometer according to Mooney for performing Viscosity tests (ML / MS 1+X), Stress Relaxation testing, Mooney Scorch, Delta Mooney testing on polymers as well as rubber compounds for quality control, research and development applications.

Entry level Mooney Viscometer

The MV 3000 Basic is a rotational shear viscometer according to Mooney for performing

– Viscosity tests (ML / MS 1+X)
– Stress Relaxation testing
– Mooney Scorch
– Delta Mooney testing

on polymers as well as rubber compounds for quality control, research and development applications.

The MV 3000 Basic is supplied as a complete, ready-to-test instrument set including a personal computer, MonControl Software, cables, connectors and regulators as well as a standard set of tools and consumables.

Easy to use:
All test parameters are pre-programmed through the MonControl Software – the instrument is equipped with a single button for starting the test sequence.

Direct feedback:
An integrated multi-color LED status bar clearly displays the current machine state.

The compact and highly rigid frame is made from high strength aluminum. Along with direct-drive technology, this guarantees stable and accurate test results in every environment.

Rotor, die assembly and drive system

The most fundamental and important parts on a Mooney Viscometer are the rotor, die assembly and in-line drive shaft. The test sample is placed below and above the rotor with optional test film. Then the upper die is lowered onto the lower die with a force of 11.5 kN.

After a pre-heat time, the rotor – which is now totally embedded in the test material in the closed die cavity – rotates at a fixed speed of 2 turns per minute, powered by an in-line drive system.

During the whole test sequence, the temperatures of both dies are measured by a separate precision probe on each die and the heaters are accordingly controlled and regulated to precisely maintain the temperature at its setpoint.

The torque needed to turn the rotor in the test material is precisely measured by an in-line torque transducer. Torque in Mooney Units (MU), die temperatures and rotor speed are recorded. Data is automatically calculated and displayed once the test is completed.


MV 3000

Large (38.10 mm) and Small (30.48 mm) Sealed, with longlife seals

Rotor speed
2 turns per minute

Test modes
Mooney Viscosity,
Mooney Scorch,
Stress Relaxation,
Mould release,
Delta Mooney



Industry standard Mooney Viscometer

The Mooney Viscometer MV 3000 is the leading test instrument for measurement of viscosity, scorching and stress relaxation on polymers and rubber compounds.

The MV 3000 is suitable for quality control as well as research and development purposes with excellent repeatability and reproducibility due to its low-mass die design, direct heating and a unique direct drive design with snap-in mechanics.

The massive aluminum frame of the MV 3000 with its 270° accessible die area allows easy sample loading while integrated rotor ejection simplifies rotor handling. Operation is made easy by 4 illuminated pushbuttons providing clear information about the machine state. A motorized safety shield separates the die area before the test sequence is started.

Die temperatures are accurately and precisely measured by calibrated probes and controlled with a precision of +/- 0.03 °C by heaters, dies and rotors with an extremely fast thermal response.

The MV 3000 is fitted with built-in software-controlled systems for automatic balancing and calibration, including a double dead-weight system to apply a defined torque of 100 Mooney units, ensuring the utmost data accuracy and eliminating the needs of any external tools or fixtures.


V-MV 3000

Large (38.10 mm) and Small (30.48 mm)
Sealed, with longlife seals

Rotor speed
0 to 50 turns per minute, 0.01 steps (0 to 5.25 radians / second)

Test modes
Mooney Viscosity,
Mooney Scorch,
Stress Relaxation,
Mould release, Delta Mooney
Mooney Variable Viscosity,
Variable test sequence block programming
Multi-step stress relaxation


High-end Mooney Viscometer

The Variable Mooney Viscometer V-MV 3000 brings traditional Mooney Viscosity, Scorch and Stress Relaxation testing to the next level. Besides the ultra-rigid test frame, the instrument incorporates the latest direct servo drive technology and superior design for unbeaten data accuracy and test result precision.

In addition to static Mooney Viscometer testing at fixed rotor speeds under isothermal conditions according to international standards, the Variable speed Mooney Viscometer V-MV 3000 is further capable of running test sequences at variable rotor speeds as well as fully dynamic tests including speed steps, ramps and multi-step relaxation, all this with simultaneous temperature profiles and optional cooling of the sample in the die cavity to as low as +10ĀčC, making the V-MV 3000 not only ideal for polymers and rubber compounds, but also silicone, latex and epoxy resin testing.

This functionality efficiently provides very useful additional information on the test material at the highest accuracy. For example, materials showing similar static viscosities at 2rpm can now be tested at variable shear rates and temperatures.

From these results, polymer specialists can gain a much better understanding of polymer and rubber behavior regarding branching, molecular weight distribution, average molecular weight as well as shear thinning.

The instrument is equipped with MonControl Software and special block programming features to allow an unlimited number of rotor speeds and test temperatures per test – of course in any combination.

Lower radial v-groove die with large, serrated rotor

The low-mass rotor design ensures homogenous temperature distribution, and in conjunction with MonTech longlife seals, offers the highest accuracy in Mooney readings.

Rubber sample after Mooney scorch testing

Mooney Scorch testing is made simple with the V-MV 3000. Test can be automatically stopped once the maximum desired Scorch time or Scorch viscosity reading is reached, maximizing instrument availability and sample throughput.

SBR Polymer sample after Mooney viscosity testing

Various types of testing film are available for easy sample handling, reduced cleaning needs, less die contamination and therefore improved repeatability.