Method of gravimetric filling of a solid product in a container comprising the following steps: a) providing a container comprising a generally cylindrical body and which is equipped in its upper part with a ridge of diameter slightly greater than the diameter of the body of the container, b) inserting the container in a hollow cylinder, the inner cavity of which has a diameter slightly greater than the diameter of the body of the container, and which is equipped with a recess in the upper area of the inner cavity, so that the ridge of the container rests in the recess of the upper area of the inner cavity of the cylinder, and with the contact area between the ridge of the container and the recess of the upper area of the inner cavity of the cylinder the only area of contact between container and cylinder, so that the container is in suspension within the inner cavity of the cylinder and with its upper surface located slightly underneath the upper surface of the cylinder; c) disposing the cylinder and container unit above a weighing cell which is equipped, on its weighing surface, with a projection which has a diameter less than the diameter of the inner cavity of the cylinder and a suitable height to raise the container by the sufficient height (h) so that the ridge of the container is no longer in contact with the recess of the upper area of the inner cavity of the cylinder but without the upper surface of the container exceeding the height of the upper surface of the cylinder, so that the container is completely suspended above the projection provided on the surface of the weighing cell and therefore resting all its weight thereon; d) covering the upper surface of the cylinder hermetically by means of a lid equipped with an orifice wherethrough it is possible to add the solid product by means of a dosing element or nozzle; e) weighing with the desired precision the container whilst it is suspended above the projection provided on the surface of the weighing cell and resting all its weight thereon, and f) filling the container with the solid product through the orifice of the lid, gravimetrically controlling the quantity of product added thereto by means of the weighing cell. a) providing a container comprising a generally cylindrical body and which is equipped in its upper part with a ridge of diameter slightly greater than the diameter of the body of the container, b) inserting the container in a hollow cylinder, the inner cavity of which has a diameter slightly greater than the diameter of the body of the container, and which is equipped with a recess in the upper area of the inner cavity, so that the ridge of the container rests in the recess of the upper area of the inner cavity of the cylinder, and with the contact area between the ridge of the container and the recess of the upper area of the inner cavity of the cylinder the only area of contact between container and cylinder, so that the container is in suspension within the inner cavity of the cylinder and with its upper surface located slightly underneath the upper surface of the cylinder; c) disposing the cylinder and container unit above a weighing cell which is equipped, on its weighing surface, with a projection which has a diameter less than the diameter of the inner cavity of the cylinder and a suitable height to raise the container by the sufficient height (h) so that the ridge of the container is no longer in contact with the recess of the upper area of the inner cavity of the cylinder but without the upper surface of the container exceeding the height of the upper surface of the cylinder, so that the container is completely suspended above the projection provided on the surface of the weighing cell and therefore resting all its weight thereon; d) covering the upper surface of the cylinder hermetically by means of a lid equipped with an orifice wherethrough it is possible to add the solid product by means of a dosing element or nozzle; e) weighing with the desired precision the container whilst it is suspended above the projection provided on the surface of the weighing cell and resting all its weight thereon, and f) filling the container with the solid product through the orifice of the lid, gravimetrically controlling the quantity of product added thereto by means of the weighing cell.