Abstract: A fluidic group (21) couplable to a first container (24) adapted to contain a drug and a second container (22) adapted to contain an ingredient, comprising: a syringe (154) comprising a movable piston (150) defining a chamber (162a) having a variable volume; a first (171, 172) and a second (25) coupling group selectively fixable to the second (22) and, respectively, to the first (24) container; a forking element (166) having a first (166?), a second (166?) and a third (166??) inlet in fluid communication with each other and, respectively, with the first coupling group (171, 172), with the second coupling group (25) and with the chamber (162a); a first one-way valve (168) interposed between the first coupling group (171, 172) and the forking element (166) and controllable to allow the passage of the ingredient from the second container (22) to the chamber (162a); and a second one-way valve (176) interposed between the second coupling group (25) and the forking element (166) and controllable to allow the passag

Abstract: Apparatus for drug preparation, comprising: a first rotor adapted to support a first container for the drug and available, in a releasable manner, on the first rotor; a second rotor adapted to support a plurality of second containers, each containing a respective ingredient; pumping means, controllable by a control unit so as to transfer each ingredient from the respective second container into the first container; a weighing device, adapted to weigh the first container and comprising a translation means, a loading cell and at least one spacer adapted to support the first container. In a condition where the spacer supports the first container by decoupling it from the first support element, the loading cell is adapted to continuously generate, during the transfer of the ingredient, a quantity indicative of a weight force.