The first device is a dispensomixer, designed to automatically dispense mixtures of polymers in pellet form with accuracy over 99%. It has capacity to combine up to 8 different materials, making it very versatile for explorations of chemical spaces of high dimensionality. It is customized to handle pellets of different sizes in the ranges in which they are commonly commercialized or manufactured, and its dispensing rate around 0.45 kg/h makes it suitable for lab-scale compounding.