ABSTRACT
The action of the acceleration due to gravity on the built-in weight or weights in the balance or on an external standard weight generates an offsetting force. An electronic force is generated to oppose the net gravitational and buoyant force imposed by the object being weighed. In calibration of the balance, a built-in calibrating weight is used and the electronic circuitry is adjusted so that the readout indicates the approximate apparent mass of the calibrating weight. At the factory, the balance is calibrated to indicate apparent mass or the conventional value of weighing in air. The syringe is calibrated by filling it with water to a particular graduation on the barrel of the syringe, weighing the syringe before and after dispensing the water, and inferring the volume from the mass and density of the water dispensed.
