Abstract: A method is for producing individual dosing quantities of a powdered product via a drum dosing device. Individual masses of multiple ejected dosing quantities are sequentially determined. A mass mean value is formed and compared to a predetermined inner target mass range. If the mass mean value is inside the range, the level of the partial vacuum acting on the dosing opening in the filling position remains unchanged, and the above formation of a mass mean value begins anew. If the mass mean value is outside the range, an adapted partial vacuum is ascertained such that in the case of excessively low mass mean value, the level of the partial vacuum is increased, and in the case of excessively high mass mean value, the level of the partial vacuum is decreased. The adapted partial vacuum is applied to the dosing opening in the filling position.

Abstract: A pipette for metering powder has a pipette sleeve and a metering piston having an end face for ejecting powder from the sleeve. The sleeve includes a free end and, on the sleeve inside, includes a circumferential wall extending in a closed manner around a longitudinal axis. The wall extends in the direction of the axis up to the free end and ends there in an edge which extends around the axis. The piston is guided to be movable parallel to the axis inside the wall. The end face, with the piston in a retracted metering position, defines a chamber with the wall. The wall is, in the region of the chamber, divided into a guide portion and a release portion adjoining the guide portion and extends up to the edge. The release portion surrounds a cross section of the chamber which is radially widened compared to the guide portion.

Abstract: A method is for producing individual dosing quantities of a powdered product via a drum dosing device. Individual masses of multiple ejected dosing quantities are sequentially determined. A mass mean value is formed and compared to a predetermined inner target mass range. If the mass mean value is inside the range, the level of the partial vacuum acting on the dosing opening in the filling position remains unchanged, and the above formation of a mass mean value begins anew. If the mass mean value is outside the range, an adapted partial vacuum is ascertained such that in the case of excessively low mass mean value, the level of the partial vacuum is increased, and in the case of excessively high mass mean value, the level of the partial vacuum is decreased. The adapted partial vacuum is applied to the dosing opening in the filling position.

Abstract: A pipette for metering powder has a pipette sleeve and a metering piston having an end face for ejecting powder from the sleeve. The sleeve includes a free end and, on the sleeve inside, includes a circumferential wall extending in a closed manner around a longitudinal axis. The wall extends in the direction of the axis up to the free end and ends there in an edge which extends around the axis. The piston is guided to be movable parallel to the axis inside the wall. The end face, with the piston in a retracted metering position, defines a chamber with the wall. The wall is, in the region of the chamber, divided into a guide portion and a release portion adjoining the guide portion and extends up to the edge. The release portion surrounds a cross section of the chamber which is radially widened compared to the guide portion.