Lab balances are essential tools for mass measurement and are based upon a variety of formats and uses. Basic lab balances are used for routine measurements of solid and liquid chemicals, whereas analytical balances can be used for sub-milligram measurements with high accuracy and precision. Features to consider when shopping include: measurement sensitivity and stability, calibration, shock resistance, and ease-of-care. In addition, purchasing considerations for analytical balances include: auto-calibration versus manual calibration options, data logging and storage, and quality of construction. A key feature with any balance is the ease-of-cleaning and maintenance.