Analytical Balances are accurate to 0.0001g (0.1mg) and are designed for great precision in quantitative chemical analysis. These type of scales are very sensitive to airflow therefore analytical balances typically come equipped with draft shields. Most analytical balances can be connected to a PC, data printer, or analytical instrument, using serial RS232 Port or USB cables. The latest models are equipped with Bluetooth technology, to allow wireless communication. All scales have high-contrast displays to improve readability and allow accurate readings even in brightly lit conditions. When choosing scales and balances for their laboratories, users should consider the capacity, resolution, weight, containers, and size of their samples, as well as the speed at which results are needed.