The modular GÖTTFERT mi-2 series melt flow indexer allows users to upgrade from a manual operated entry-level unit to a semi-automatic machine.

  • ISO 1133
  • ASTM D1238
  • ASTM D3364

The mi2-series of melt flow rate testers (plastometers) from GÖTTFERT offers a simple way to determine MFR (melt flow rate) and MVR (melt volume rate). Due to the modular design of this series, it is possible to automate the execution of the melt flow rate measurement increasingly. The testers can be used as stand-alone units or with a PC to manage the test parameters and results.

All plastometers sold by GÖTTFERT are equipped with a piston-speed-sensor and can measure automatically according to ISO 1133 Procedure B and ASTM D1238 Procedure B.

With the optional cutting device, the measurements can also be evaluated according to ISO 1133 Procedure A and ASTM D1238 Procedure A.

With additionally available special capillaries, measurements according to ASTM D1238 Procedure C or ASTM D3364 can also be performed.


The basic mi2.1 is suitable for incoming goods inspection when only a small number of measurements are performed.


The mi2.2 has a higher ease of use than the mi2.1 due to an automatic weight lifting device, which enables the measurement to be started automatically after the melting time is over. Once the measurement has been carried out, the weights can be lifted automatically.


Compared to the mi2.2, the mi2.3 also has a weight magazine that can be loaded with up to 8 test weights. Due to the weight magazine the used test weights do not have to be lifted manually onto the device.


Model mi2.1 mi2.2 mi2.3
Test procedure Automatic measurement with single load Automatic measurement with single load and manual weight selection
Test chamber Two heating circuits, electrically heated, temperature sensor PT100 1/3 DIN
Temporal temperature fluctuation in the usable range: less than +/- 0.1°C
Spatial temperature distribution in the usable area (0-70 mm in front of the capillary)
< +/- 0.2°C (test temperature 60°C to 400°C)
< +/- 0.3°C (test temperature 400°C to 500°C)
Weights 0.325 - 21.6 kg
Weight guidance Piston guidance according to EN ISO 1133 / ASTM D1238
Electrical weight lifting - Yes Yes
Pre-compression and material ejection - Manual with weights (optional) Partially automated with manual weight selection
Display of actual temperature 0 - 500°C on touchscreen monitor
Temperature measurement via 16-bit converter, resolution from 0 - 320°C: 0.01°C; resolution from 320 - 500°C: 0.1°C
Test barrel 9.555 (-0.01) mm Diameter
Touchscreen Display 5.7" (14.48 cm) color VGA touch screen
Test-point recording Electronic, resolution: 0.025 mm/pulse
Display of results Numerical
Capillary 2,095 (+/- 0,003) mm Durchmesser, 8 (+/- 0,025) mm Länge
1,048 (+/- 0,005) mm Durchmesser, 4 (+/- 0,025) mm Länge (Option)
Aditional analysis IV-calculation for the characterization of polyester and polyamide
Melt-cutting device optional
Capillary plug optional
Nitrogen purging optional
Corrosion resistant piston/barrel set optional
Abrasion resistant piston/barrel set optional
Pre-compression - Adjustable melting position (optional)
Interface Ethernet, serial, 1 or 2 x USB (printer, memory)


Optional units
  • Manual die plug (special heated version for high temperatures available)
  • Automatic melt cutting unit
  • Nitrogen purge for hydroscopic materials
  • Alternative steel grades for barrel and piston with higher corrosion or abrasion resistance
  • Data protection of parameters and results via uninterruptible power supply
  • Only mi2.2: Mechanism for pre-compressing and ejection with a higher weight

Add-ons for advanced measurements

Directly connected laboratory scale for determination of the melt density.


The residual moisture has a considerable influence on the measurement result for certain test materials. Therefore, it is recommended to dry test materials before a IV measurement and to determine the residual moisture.



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