The means are described whereby a disc stack centrifuge may be scaled-down by up to 10-fold of its separation capacity. The centrifuge separation characteristics so measured are suitable for direct scale-up predictions of centrifuge performance where only small volumes of particle suspension are available for study. Such an ability to scale-down is especially important in the processing of biological particles where for example, in the early stage of process development, there is often insufficient fermentation broth for fullscale studies. Scale-down is achieved by the reduction of the number of discs available for separation purposes and by the careful positioning of these discs in the overall disc stack.

A man of few words in a rural Nevada prison, convict Roman Coleman is unable to keep his temper in check in Laure de Clermont-Tonnerre’s sober and humanistic character study “The Mustang.” It is that severe lack of anger management that got Roman incarcerated over a decade ago, with half of his sentence for a tragic case of domestic violence still remaining. In fact Roman, stupendously portrayed by Belgian actor Matthias Schoenaerts (“Far from the Madding Crowd”) in a quiet, expressive performance, doesn’t hesitate to declare that he isn’t good with people after years of confinement.