The Melt Flow Index intrument MI-4 enables to measure the melt-flow-rate (MFR) and the melt-volume-rate (MVR) with a semi-automatic instrument. 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-4 is equipped with a weight cartridge, to enable the operator an opportunity to choose the measuring weight automatically. The high resolution position sensor with an automatic selection of the resolution allows a repeatable, reliable determination of MFR and MVR. The Tests can vary from one test loads (single load mode) to several test loads per barrel filling (multiple test load mode).

  • 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
  • Automatic computation of resolution