Abstract: The metering device includes a hollow plunger (5) delimiting a defined volume, mounted so that it can move on a receptacle (1), and communicating with it, as well as an elastic member connecting the plunger to the receptacle, consisting of an elastically deformable cylindrical collar (8) including at least one valve (14) capable of closing off the outlet orifice of the receptacle, and fitted around a closed cylinder (6), having the same axis as the cylindrical collar, integral with the receptacle (1). Application to the administration of pharmaceutical products in fluid form.