Filter Pressure Value Test (FPV test) - a new

For quite a period screen life tests for rating the quality and
dipersibility tests of colorants in polymer melts have been
performed. But the comparison of those test were poor. The draft of
the new standard EN 13900-5 describes now a procedure which
increases the comparability of those tests. On one hand this standard
describes which kind of extruder, melt pump, sieves and breaker plate
have to be used and on the other hand the composition of mixture,
the test routine and the evaluation is described. 多功能转矩流变仪HAAKE PolyLab OS