The Ultra-Microbalance UYA 3Y Series is designed to meet the highest requirements for mass determination. Its built in system of automatic internal adjustment/calibration assures outstanding measurement accuracy and precision. The device comprises the following two major components which are enclosed separately: 1. Electronic module and 2. Precise mechanical measuring system. Such design eliminates the influence of heat from instrument electronics on the mechanical components; additionally, it provides protection from shocks and vibrations caused by user operation. All the elements of a microbalance are made of glass and steel which eliminates the electrostatic impact on the weighing process.