Laboratory Balance (analytical instruments) is the most accurate scales. The analytical balances are assigned to the Class I. Using this kind of balance is possible to weigh samples of 0.0001 g to 0.00001 g depending on the model. Laboratory scales are used primarily for production and training institutions, laboratories, metrology centers, medical facilities, industrial plants and other facilities which require high accurate measurements. Analytical balances are tend to have an internal auto-calibration, GLP protocols for determining the density, percentage weighing, interface for data transfer to an external device and other necessary functions.