John Morris Scientific is offering a range of products from Gottfert including melt indexers and high-pressure capillary rheometers.
The MI-4 is a melt indexer with an automatic weight selection.
The MI-4 can carry out single weight test ISO 1133 and ASTM D1238, procedures B and C for the 'half height/half diameter' standard.
Tests can be made either with a single test load or multiple test load (several test loads per barrel filling).
The Rheograph 75 is a user-friendly high-pressure capillary rheometer with an enlarged shear rate range, higher test piston force and a huge variety of options.
Windows database software allows the parameter manipulation, online monitoring as well as freely definable evaluation of results.
Capillary rheometry is a technique in which a sample undergoes extrusion through a die of defined dimensions and the shear drop across the die is recorded at set volumetric flow rates.