The GOETTFERT MI-3 is a semi-automatic machine with fix installed measuring weights matching the highest standards.

  • ISO 1133
  • ASTM D1238
  • ASTM D3364

The Melt Flow Index intrument MI-3 enables to measure the melt-flow-rate (MFR) and the melt-volume-rate (MVR) with a semi-automatic instrument. The MFR is the mass of polymer in grams flowing in 10 minutes through a capillary of a specific diameter and length and with a specific pressure applied by means of weights for prescribed temperatures. The method is given in ASTM D1238 and ISO 1133. This unique melt index instrument can carry out a single weight test according to ISO 1133 and ASTM D1238, procedures B, as well as ISO 1133 and ASTM D1238 Procedure C for the "Half Height / Half Diameter" standard. 
The MI-3 is equipped with a weight cartridge, to enable the operator an opportunity to choose the measuring weight manual. The instrument enables operators in quality control (QC) and incoming goods inspection to conduct single measurements while meeting highest quality standards according to ISO 1133 as well as ASTM D1238 (Procedure A-B-C). The high resolution position sensor with an automatic selection of the resolution allows a repeatable, reliable determination of MFR and MVR.  Besides the standardized measurement processes (ASTM and ISO) GOETTFERT also provides add-ons, which are postitively contributing to the total value of the instrument. 

  • force controlled pre-loading / ejection via drive and test weights
  • multi-Load tests with up to 8 different weights, ascending, descending or freely selectable 
  • high-precision timer with a resolution better than 0.001 s
  • temperature control algorithm, resolution 0 to 320°C: 0.01°C, 320 to 500°C: 0.1°C
  • high-resolution position transducer to measure volume output

The MI-3 comes with different options. Furthermore, GOETTFERT also provides add-ons, which are extending the functionality of the device. The following add-ons are available:

  • Die Swell measurement 
  • online determination of the melt density (by integrated laboratory scale)
  • Die Swell Unit 

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