An analytical balance is an instrument used to measure mass to a very high degree of precision. The weighing pan(s) of a high precision (.1,.01, mg or better) analytical balance are inside a transparent enclosure with doors so dust does not collect and so any air currents in the room do not affect the delicate balance. The use of a Vented Balance Safety Enclosure that has uniquely designed acrylic airfoils that allow a smooth turbulence-free airflow that prevents balance fluctuation. Weigh down to 1μg without fluctuations or loss of product. Also, the sample must be at room temperature to prevent natural convection from forming air currents inside the enclosure, affecting the weighing.
Analytical precision is achieved by maintaining a constant load on the balance beam, by subtracting mass on the same side of the beam that the sample is added. The final balance is achieved by using a small spring force rather than subtracting fixed weights.
