Mk V - P14

Rapid Plastimeter

Measures the plasticity or viscosity of unvulcanized rubbers.

Rapid Plastimeter Mk V- P14


The P14 Rapid Plastimeter offers greatly enhanced operator access and is available in five different versions. A major feature on all versions is powered zero calibration eliminating the need for tedious manual setting. Aluminium castings are used throughout the design for rigidity and stability. All versions comply with National and International standards.

Rapid Plastimeter – Basic Model, P14/1
  • Fully automatic operation
  • Built in diagnostics
  • LED platen Temperature Indicator
Rapid Plastimeter – Printer Model, P14/2
  • Compact printer with high speed print capability
  • Single/Median mode of operation
  • 24 Character column print output
  • Date and time recorder
  • Traceability of aborted tests
  • Alternative language settings
  • Additional diagnostic features
  • Platen Temperature print out
Rapid Plastimeter – Data Terminal and Printer Model, P14/3
  • Data input terminal and display
  • Compact printer with high speed print capability
  • 24 Character column print printer
  • Date and time recorder
  • Continuous Platen temperature display
  • Variable load durations
  • Sample and operator identification with automatically increasing suffix
  • Traceability of aborted tests
  • Alternative language settings
  • Calibration and service reminder
  • PRI evaluation
Rapid Plastimeter – P14/PC
  • Same specification as the P14/1, plus:
  • includes RS232C interface with data lead
Rapid Plastimeter – P14/VT
  • Same specification as the P14/3, plus:
  • Variable platen temperature 60°C – 180°C



The Wallace Rapid Plastimeter measures the plasticity or viscosity of unvulcanised rubbers. The test is simple, clean and quick. The instrument is used in conjunction with the Wallace -MRPRA Ageing Chamber (Cat. Ref. O14) to determine the Plasticity Retention Index (PRI) of raw natural rubbers.

The variable temperature model (P14/VT) characterises the flow behaviour of synthetic rubber compounds as, unlike the other models, its platen temperatures can be varied between 60°C and 180°C. For some applications the P14/VT offers a quick, low cost alternative to a Mooney Viscosity test.

The instrument is supplied in four versions and each version comes complete with specimen cutter. The instrument is shipped with 10mm dia top platen installed and alternative top platens of 7.3 and 14mm diameter are supplied as accessories. The platens are easily interchangeable. 


Test Procedure

The sample is prepared using the specimen cutter provided and it is then enclosed between two pieces of tissue paper, as defined by international standards, before being placed between the platens. The tissue paper prevents the material sticking to the platens or sliding between them.

The automatic test sequence is started when the operating handle is rotated.

The reduction in thickness of the sample is displayed digitally, which freezes, to show the plasticity number at the end of 15 seconds.



Plastimeter dimensions

306mm (w) x 353mm (d) x 306mm (w)

Specimen cutter dimensions

380mm (d) x 80mm (w)

Weight of Plastimeter


Platen sizes

10mm, 7.3 and 14mm Diameter


BS 903: Pt A59 :section A59.1 : 1997 ISO 2007: 1991

Platen temperature P14/1,2,3


Platen temperature P14/VT

60°C – 180°C

Test time

15 secs preload, 15 secs compression

Compressive force



Volumetric Specimen Cutter

This new Specimen Cutter with its compact robust design allows the user to easily cut multiple volumetric samples for use with the P14 Plastimeter and O14 Ageing oven.  An easy to operate circular motion of the handle, allows the cutting of consistent volumetric samples quickly and easily. 
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