In this paper, results of DNAPL spreading experiments carried out in a geocentrifuge are analysed. The experiments are performed in the GeoDelft geocentrifuge facility in the framework of the EU-funded project NECER (Network of European Centrifuges for Environmental Research). The experiments constitute the intrusion of a known amount of PCE into a water saturated soil sample. They are carried out under 12g, 15g, and 30g. The objectives of these experiments were to investigate the potential of geocentrifuge tests for the study of environmental problems, to investigate the effect of acceleration on the spreading of DNAPL, and to determine whether Pc-S curves of soils measured in a geocentrifuge are valid under 1-g conditions. Based on the experimental data and numerical simulations, it can be concluded that the capillary pressure-saturation curves measured in a geocentrifuge are valid for practical applications of multi-phase flow at 1-g. Furthermore, we have demonstrated the importance of numerical simulations in the understanding of measured data, through trying different scenarios and matching numerical and experimental results to describe the observed data and their usefulness in the design of a complex experiment on multiphase flow.